RemoteIoT Monitoring SSH Download Raspberry Pi Secure Access

RemoteIoT monitoring SSH obtain Raspberry Pi opens up a world of potentialities for managing and accessing your IoT gadgets remotely. Think about effortlessly accumulating information out of your distributed sensors, all dealt with securely by means of SSH. This detailed information delves into the intricacies of organising a safe distant monitoring system centered across the Raspberry Pi, masking all the things from preliminary setup to information administration.

The method includes configuring safe SSH entry to your Raspberry Pi, which acts because the central hub for accumulating information from numerous IoT gadgets. We’ll discover the sensible steps wanted to determine a dependable and safe distant monitoring system. This information additionally covers the very important facet of securely downloading information from the Raspberry Pi, making certain that your data stays protected all through the method.

Introduction to Distant IoT Monitoring

Distant IoT monitoring is actually conserving tabs on Web of Issues (IoT) gadgets from a distance. Consider it like a digital babysitter in your good home equipment, sensors, and related gadgets. This permits for real-time information assortment and evaluation, enabling proactive upkeep and optimized efficiency. It is a highly effective device for companies and people alike.This refined system leverages communication networks to trace and handle distant property, no matter their geographical location.

The advantages lengthen to cost-effectiveness, improved effectivity, and enhanced security, usually resulting in vital operational enhancements and diminished downtime. It is an enchanting mix of know-how and sensible software.

Common Structure of a Distant IoT Monitoring System

A typical distant IoT monitoring system follows a client-server mannequin. The system’s core parts work together seamlessly to offer complete insights. A community of sensors and actuators collect information from the sphere, which is then relayed to a central server. The server processes this information and presents it to the shopper interface, permitting for distant monitoring and management.

This structure is remarkably adaptable and might be tailor-made to particular necessities.

Elements of a Distant IoT Monitoring System

The effectiveness of a distant IoT monitoring system hinges on its parts working harmoniously. The system sometimes includes a number of essential components:

• Sensors and Actuators: These type the frontline of information assortment. They’re embedded inside the IoT gadgets, gathering bodily parameters, equivalent to temperature, stress, or humidity. Actuators reply to instructions from the monitoring system, enabling distant management of the gadgets.
• Communication Community: Dependable communication is paramount. This usually includes safe protocols like HTTPS or MQTT, making certain information integrity and stopping unauthorized entry. The community acts because the conduit, making certain information circulation between the IoT gadgets and the monitoring system.
• Monitoring Server: The central hub for information processing and administration. The server receives information from the sensors, analyzes it, and generates reviews. Crucially, the server ensures information safety and integrity all through all the course of.
• Shopper Interface: That is the user-friendly interface that enables licensed personnel to entry and work together with the system. The interface shows collected information, alerts, and permits for distant management of related gadgets.

Significance of Safe Communication Protocols

Sturdy safety is indispensable in distant IoT monitoring. Compromised techniques can result in vital operational disruption, monetary loss, and even security dangers. That is particularly essential in industrial environments.

“Safe communication protocols are important to guard delicate information and preserve system integrity.”

Implementing sturdy encryption, authentication, and authorization mechanisms is important. This protects towards unauthorized entry, information breaches, and malicious assaults. The protocols employed must be fastidiously chosen and recurrently up to date to satisfy the evolving safety panorama.

Examples of IoT Gadgets for Distant Monitoring, Remoteiot monitoring ssh obtain raspberry pi

Distant monitoring is relevant throughout numerous sectors and purposes. Think about these examples:

• Good Agriculture: Distant monitoring of crop circumstances, soil moisture, and climate patterns permits optimized irrigation and fertilization methods, resulting in larger yields and diminished useful resource waste.
• Industrial Automation: Actual-time monitoring of apparatus well being, efficiency, and environmental components minimizes downtime and maximizes effectivity.
• Environmental Monitoring: Distant sensing of air and water high quality, together with climate patterns, facilitates proactive environmental safety and catastrophe preparedness.
• Good Houses: Distant management of lights, thermostats, and safety techniques enhances comfort and security.

SSH Entry for Distant Monitoring

Unlocking the potential of your Raspberry Pi-powered IoT gadgets usually hinges on seamless distant entry. SSH, or Safe Shell, acts as the important thing, offering a safe tunnel for communication and management over your gadgets from a distant location. This important aspect in distant monitoring facilitates real-time information retrieval and gadget administration, making certain your IoT infrastructure operates easily and effectively.SSH establishes a safe encrypted connection between your pc and the Raspberry Pi, permitting you to execute instructions and switch information.

This ensures information integrity and confidentiality, particularly essential in at present’s security-conscious surroundings. It is akin to having a personal and safe pathway to your Raspberry Pi, making certain that no unauthorized events can eavesdrop in your communications or tamper together with your information.

The Function of SSH in Distant IoT Monitoring

SSH performs an important position in distant IoT monitoring by offering a safe channel for communication between the monitoring system and the IoT gadget. This safe connection is paramount for retrieving real-time information, executing instructions, and managing the gadget from a distance. It successfully establishes a safe distant management middle in your IoT deployments.

How SSH is Used to Entry and Management Raspberry Pi Gadgets

SSH permits entry and management over Raspberry Pi gadgets by means of a safe encrypted connection. This permits for a big selection of operations, from retrieving sensor information to configuring gadget settings. Utilizing a safe shell shopper, you may subject instructions on to the Raspberry Pi, successfully remodeling it right into a remote-controlled node inside your community.

Safety Concerns When Utilizing SSH for Distant Entry

Safety is paramount when establishing distant entry by means of SSH. Robust passwords, common password modifications, and using SSH keys are vital. Implementing sturdy safety measures is important to guard your Raspberry Pi from unauthorized entry. Using a robust password and using two-factor authentication additional enhances safety and helps safeguard your gadget from potential breaches. Actively monitoring for suspicious exercise and promptly addressing safety vulnerabilities are essential facets of sustaining a safe connection.

Demonstrating Configure SSH Entry on a Raspberry Pi

Configuring SSH entry on a Raspberry Pi sometimes includes enabling the SSH server and producing SSH keys. These steps guarantee safe distant entry. This configuration course of includes enabling the SSH service on the Raspberry Pi, producing an SSH key pair, and including the general public key to the licensed keys file on the Raspberry Pi. This can allow you to log in utilizing your SSH shopper with out having to enter a password every time.

Utilizing SSH keys, as a substitute of passwords, is extremely really helpful for enhanced safety.

Totally different SSH Shopper Software program Choices

Varied SSH shopper software program choices can be found for interacting together with your Raspberry Pi. Every gives distinctive options and advantages. The selection depends upon the consumer’s familiarity and preferences.

SSH Shopper Software program	Description
PuTTY	A preferred, free, and open-source SSH shopper for Home windows.
Terminal (macOS/Linux)	Constructed-in terminal purposes for macOS and Linux, offering primary SSH performance.
SecureCRT	A business SSH shopper providing superior options and customization choices.
MobaXterm	A flexible SSH shopper with options like X11 forwarding and a number of simultaneous connections.

Raspberry Pi in IoT Monitoring Methods: Remoteiot Monitoring Ssh Obtain Raspberry Pi

The Raspberry Pi, a small and inexpensive single-board pc, has turn out to be a well-liked selection for constructing and deploying IoT monitoring techniques. Its versatility, mixed with a vibrant neighborhood and available software program, makes it a robust device for a variety of purposes. Its affordability and low energy consumption additional improve its attractiveness in resource-constrained environments.The Raspberry Pi’s compact type issue and low energy consumption make it ultimate for deployment in numerous places, from distant climate stations to industrial sensors.

It acts as a central hub, accumulating information from numerous sensors, processing it, and transmitting it to a distant server for evaluation. This allows real-time monitoring and alerts, vital for proactive administration and upkeep.

Function of the Raspberry Pi in Distant IoT Monitoring

The Raspberry Pi serves because the “mind” of the IoT monitoring system. It collects information from numerous sensors, performs primary processing, and transmits the information to a central server for storage and evaluation. This allows distant monitoring and management of the monitored system. The Pi’s position isn’t just information assortment but in addition essential in performing as a mini-server for information processing.

{Hardware} Capabilities Related to IoT Monitoring

The Raspberry Pi’s {hardware} capabilities align nicely with IoT monitoring wants. It sometimes has a processor, reminiscence, and storage. The processor handles the computational calls for of information acquisition and processing. Reminiscence is critical for storing the sensor information and operating the monitoring software program. Storage, equivalent to an SD card, shops configuration information and operational information.

Varied I/O choices, like GPIO pins, allow direct connection to sensors. Totally different fashions of Raspberry Pi supply completely different processing energy, reminiscence, and I/O choices, permitting flexibility in selecting the suitable mannequin primarily based on the complexity of the monitored system.

Software program Capabilities for IoT Monitoring

The Raspberry Pi’s capabilities lengthen past its {hardware}. A spread of working techniques, like Raspbian, are optimized for IoT deployments. These techniques embrace libraries and instruments for information acquisition, processing, and communication. Programming languages like Python and Node.js are ceaselessly used for growing monitoring purposes. Customized scripts and purposes are developed to gather, analyze, and transmit the sensor information.

This software program stack permits for the creation of personalized options tailor-made to the precise wants of the monitoring system.

Benefits of Utilizing a Raspberry Pi

The Raspberry Pi’s low value and accessibility are vital benefits. Its small measurement and low energy consumption make it appropriate for numerous deployments. The open-source nature of the Raspberry Pi ecosystem offers a variety of software program choices and neighborhood assist. Its versatility and adaptableness to varied sensor varieties and communication protocols are noteworthy strengths.

Comparability with Different Embedded Methods

In comparison with different embedded techniques, the Raspberry Pi gives a stability of processing energy, value, and adaptability. Whereas extra highly effective embedded techniques exist, the Raspberry Pi’s affordability and accessibility make it engaging for smaller-scale IoT initiatives. Microcontrollers supply restricted processing energy however decrease value. Extra highly effective embedded techniques are costlier and require specialised information. The Raspberry Pi strikes an acceptable stability.

Widespread Use Instances in IoT Setups

The Raspberry Pi finds widespread use in numerous IoT purposes. Residence automation techniques use it to manage lights, temperature, and safety. Agricultural monitoring employs it to trace soil circumstances, climate patterns, and crop well being. Industrial monitoring techniques use it for monitoring gear efficiency and stopping malfunctions. These are only a few examples, highlighting the adaptability and broad purposes of the Raspberry Pi within the realm of IoT.

Information Obtain and Administration

Fetching and organizing information out of your distant IoT setup is essential for significant insights. Think about having a continuing stream of information out of your good farm, however no method to gather and analyze it successfully. This part dives into the sensible facets of dealing with that information, from selecting the best codecs to storing it safely.Information from IoT gadgets, like temperature sensors or movement detectors, is available in numerous codecs.

Understanding these codecs and choosing the suitable one in your wants is essential. Totally different sensors and gadgets may have their most well-liked output strategies, and choosing the right strategy will drastically have an effect on the longer term utility of the information.

Widespread Information Codecs

Varied codecs are used for IoT information. Widespread codecs embrace JSON (JavaScript Object Notation), CSV (Comma Separated Values), and even customized codecs particular to sure gadgets. JSON is a light-weight format well-suited for structured information, whereas CSV is right for tabular information, good for spreadsheets.

Information Assortment Strategies

Varied strategies exist for accumulating information. The Raspberry Pi, performing because the central hub, can use scripts or applications to collect information from numerous sources. These scripts might be tailor-made to the precise sensors and gadgets in use. As an example, a script would possibly learn information from a temperature sensor each minute, then log it to a file.

Downloading Information from a Raspberry Pi

SSH (Safe Shell) is a robust device for securely accessing the Raspberry Pi. Utilizing SSH instructions, you may obtain the collected information information. This would possibly contain transferring the information information over to a delegated server or cloud storage, enabling offsite entry to the collected information. A command like `scp /path/to/datafile consumer@remote_host:/path/to/vacation spot` is usually used for securely copying information between machines.

Safe Information Storage and Administration

Safety is paramount when dealing with delicate information from distant IoT techniques. Implementing encryption and entry controls is important to guard the integrity of your information. A safe server or cloud storage answer will help safeguard your information from unauthorized entry. Utilizing sturdy passwords and implementing multi-factor authentication are necessary safety steps.

Storage Options

Choosing the proper storage answer depends upon the amount and kind of information. For smaller datasets, a neighborhood onerous drive would possibly suffice. For bigger datasets, cloud storage options like AWS S3, Google Cloud Storage, or Azure Blob Storage are viable choices. Think about the fee, scalability, and safety features of every storage possibility when making your selection.Databases like MySQL, PostgreSQL, or MongoDB are wonderful for structuring and querying information.

A database gives a extra organized and searchable strategy to information storage.

Safety Protocols and Finest Practices

Defending your distant IoT monitoring system is paramount. A breach can expose delicate information, disrupt operations, and probably result in monetary loss. Sturdy safety protocols will not be simply good observe, they’re important for the reliability and trustworthiness of your system. A safe system fosters confidence in its customers and companions.

Significance of Safety in Distant IoT Monitoring

Distant IoT monitoring techniques gather and transmit vital information, usually from delicate places. This information requires sturdy safety towards unauthorized entry, modification, or deletion. A compromised system may end up in information breaches, monetary losses, and even bodily hurt in sure contexts.

Safety Measures to Shield the System

Implementing sturdy safety measures is a proactive strategy to guard towards potential threats. These measures embrace using sturdy encryption protocols throughout information transmission, using sturdy authentication strategies for entry management, and recurrently updating software program to patch vulnerabilities. These precautions are essential for safeguarding the integrity and confidentiality of the system.

Potential Vulnerabilities and Threats

Distant IoT monitoring techniques are weak to varied threats. These embrace community intrusions, malware infections, and social engineering assaults concentrating on customers. Vulnerabilities can exist in each the {hardware} and software program parts of the system, probably resulting in unauthorized entry or information breaches. Understanding these vulnerabilities and implementing countermeasures is essential.

Implementing Robust Passwords and Entry Controls

Robust passwords are the primary line of protection towards unauthorized entry. A sturdy password coverage ought to implement complexity necessities, common password modifications, and multi-factor authentication. Implementing strict entry controls, equivalent to role-based entry management (RBAC), limits the actions that customers can carry out primarily based on their assigned roles. This layered strategy considerably enhances safety.

Safety Finest Practices for Safe Distant Entry

An inventory of safety finest practices for safe distant entry consists of:

• Using sturdy encryption protocols for information transmission, equivalent to HTTPS or SSH.
• Using multi-factor authentication (MFA) for all consumer accounts, offering an additional layer of safety.
• Commonly updating the firmware and software program of all gadgets to patch vulnerabilities.
• Implementing intrusion detection and prevention techniques to determine and mitigate potential threats.
• Conducting common safety audits to determine and tackle vulnerabilities.
• Educating customers about safety finest practices, together with recognizing phishing makes an attempt and avoiding suspicious hyperlinks.
• Using a safe community configuration, equivalent to a digital non-public community (VPN) for distant entry.

Sensible Implementation Steps

Embarking in your IoT monitoring journey? Let’s dive into the nitty-gritty of organising a strong and dependable distant system. This is not rocket science, however a well-structured strategy makes all of the distinction.Efficiently monitoring your IoT gadgets from afar depends on a mix of {hardware} decisions, software program configurations, and safe communication channels. The method, whereas probably advanced, is in the end achievable with cautious planning and execution.

{Hardware} Necessities

A powerful basis begins with the suitable {hardware}. This encompasses extra than simply the Raspberry Pi; it is about choosing parts that work seamlessly collectively. An important facet is selecting a dependable energy provide in your Raspberry Pi to keep away from sudden shutdowns.

• Raspberry Pi (Mannequin 4 or related): The mind of your system. Think about components like processing energy and RAM to make sure your chosen mannequin can deal with the monitoring duties.
• Ethernet or Wi-Fi connection: Essential for communication between the Raspberry Pi and the monitoring server.
• Sensors (temperature, humidity, mild, and so on.): These are the eyes and ears of your system, accumulating information from the surroundings. Guarantee compatibility together with your chosen Raspberry Pi.
• Exterior storage (e.g., USB drive): Storing the collected information securely is paramount. An exterior drive offers a dependable backup in your vital data.

Software program Necessities

Choosing the suitable software program instruments is important for a easy monitoring expertise.

• Working System (e.g., Raspberry Pi OS): Select an acceptable OS that’s appropriate together with your chosen Raspberry Pi mannequin and permits seamless integration with different software program.
• Monitoring Software program (e.g., Node-RED, Grafana): These instruments facilitate information visualization, permitting you to simply perceive traits and anomalies in real-time.
• SSH Shopper (e.g., PuTTY, Terminal): Gives safe entry to your Raspberry Pi for configuration and information retrieval.

Configuring the Monitoring System

Establishing the system includes a number of key steps.

• Putting in the working system on the Raspberry Pi. This step ensures your system is able to obtain information from sensors.
• Configuring the sensors and their communication protocols. Correct sensor configuration ensures correct information assortment and transmission.
• Putting in and configuring the monitoring software program. This can be a vital step that permits you to visualize the information being collected out of your sensors.

Connecting to the Raspberry Pi through SSH

Securing distant entry to your Raspberry Pi is essential for monitoring and administration.

• Producing SSH keys: This methodology offers a safe and handy method to entry your Raspberry Pi.
• Including the general public key to the Raspberry Pi’s authorized_keys file. This step ensures your shopper can entry the Pi securely.
• Testing the SSH connection utilizing a terminal or SSH shopper. This verifies your connection and entry to the Raspberry Pi.

Downloading Information from the Raspberry Pi

Retrieving the collected information is a vital facet of any monitoring system.

• Utilizing the `scp` command to securely switch information. This command is used to repeat information between your native machine and the Raspberry Pi.
• Using a scripting answer (e.g., Python) for automated information retrieval. This strategy is helpful for dealing with giant quantities of information collected over time.
• Utilizing a safe file switch protocol (SFTP) for a extra complete and versatile answer. This protocol is especially helpful when coping with a number of information and information units.

Case Research and Use Instances

Distant IoT monitoring is not only a futuristic idea; it is remodeling industries at present. From optimizing agricultural yields to making sure industrial security, the real-world purposes are spectacular and continuously evolving. Let’s delve into some fascinating examples and perceive the sensible advantages.

Actual-World Examples of Distant IoT Monitoring

Distant monitoring techniques are actually integral to many industries. Think about a sensible farm utilizing sensors to trace soil moisture, temperature, and nutrient ranges. This information permits farmers to exactly modify irrigation and fertilization schedules, maximizing crop yields whereas minimizing useful resource consumption. In manufacturing, real-time monitoring of apparatus well being by means of IoT sensors can predict potential breakdowns, enabling proactive upkeep and stopping expensive downtime.

This can be a vital facet of preventative upkeep.

Particular Use Instances

• Good Agriculture: Sensors on farms observe soil circumstances, climate patterns, and crop well being, enabling exact irrigation, fertilization, and pest management. This reduces water utilization and maximizes yield. Information evaluation helps farmers make knowledgeable choices for optimum outcomes.
• Industrial Monitoring: Sensors positioned on equipment observe efficiency metrics, equivalent to temperature, vibration, and stress. These information streams assist anticipate gear failures, schedule upkeep, and forestall expensive downtime. This permits for a extra environment friendly and productive work surroundings.
• Good Cities: IoT sensors deployed all through city areas monitor visitors circulation, air high quality, and vitality consumption. This information permits metropolis planners to make knowledgeable choices about infrastructure enhancements, useful resource allocation, and public security.
• Environmental Monitoring: Deploying sensors in distant places permits steady monitoring of environmental circumstances, equivalent to air and water high quality, and forest well being. This helps in understanding environmental modifications and potential threats.

Advantages of Distant IoT Monitoring Purposes

The advantages are multi-faceted and lengthen throughout quite a few industries. Diminished operational prices, elevated effectivity, improved security, and enhanced decision-making are key benefits.

• Value Financial savings: Proactive upkeep and optimized useful resource utilization translate to vital value reductions over time. Diminished downtime and minimized waste contribute on to financial savings.
• Improved Effectivity: Actual-time information insights permit for fast changes and optimizations, boosting operational effectivity throughout numerous sectors. This can be a key benefit in lots of industries.
• Enhanced Security: Predictive upkeep reduces the danger of sudden gear failures, enhancing security and stopping accidents.
• Information-Pushed Selections: Actual-time information assortment permits for extra knowledgeable and strategic decision-making, main to higher outcomes in numerous purposes.

Challenges and Options in Deployment

Implementing distant IoT monitoring techniques usually presents distinctive challenges. Information safety, community connectivity, and sensor upkeep are key concerns.

• Information Safety: Defending delicate information transmitted over networks is essential. Implementing sturdy encryption and entry management mechanisms is important. Common safety audits are really helpful.
• Community Connectivity: Dependable community connectivity is important for steady information transmission. Deploying sturdy and resilient networks in distant places is critical. Backup techniques and redundancy methods can mitigate this threat.
• Sensor Upkeep: Making certain the accuracy and reliability of sensors requires correct calibration, upkeep, and alternative schedules. Correctly designed upkeep procedures will help.

Comparability of Distant IoT Monitoring Options

Totally different options cater to varied wants and budgets. A complete comparability considers components like scalability, value, and safety.

Characteristic	Answer A	Answer B	Answer C
Scalability	Excessive	Medium	Low
Value	Excessive	Medium	Low
Safety	Wonderful	Good	Honest
Ease of Use	Medium	Excessive	Low

Instruments and Applied sciences

Unlocking the potential of your IoT deployments hinges on the suitable instruments. From managing information to securing connections, a strong toolkit is important. Let’s discover the arsenal of applied sciences that energy trendy distant IoT monitoring.

Overview of Key Instruments

A wide selection of instruments and applied sciences can be found for distant IoT monitoring, every with distinctive strengths and weaknesses. Choosing the proper instruments relies upon closely on the precise wants of your system, equivalent to information quantity, safety necessities, and the complexity of the monitored gadgets. These instruments vary from easy command-line utilities to classy cloud-based platforms.

Generally Used Instruments

These instruments present numerous functionalities, from information acquisition to evaluation and visualization. Understanding their respective roles is essential for efficient system design.

• Working Methods: Important for managing the Raspberry Pi or different embedded gadgets. Working techniques like Linux, with its huge ecosystem of instruments and drivers, are extremely common. This consists of specialised distributions like these tailor-made for embedded techniques. Their position extends past easy gadget operation; additionally they facilitate communication with different instruments and supply a platform for customized scripts and purposes.

• Programming Languages: Python, with its wealthy libraries for information dealing with and networking, is a standard selection. Languages like Node.js, C++, and Java additionally play vital roles in growing customized monitoring purposes and gadget drivers. Their flexibility and extensibility allow environment friendly information processing and integration with different techniques.
• Monitoring Platforms: These platforms supply centralized dashboards and reporting instruments. Cloud-based platforms like Grafana, Prometheus, and InfluxDB are broadly used for visualizing information, setting alerts, and producing reviews. They provide a streamlined method to gather and analyze metrics from numerous sources.
• SSH Purchasers: Important for safe entry to gadgets. PuTTY, SecureCRT, and the command-line `ssh` command are ceaselessly used for managing distant gadgets and transferring information. Their sturdy safety features defend delicate data throughout distant operations.
• Database Methods: Storing and managing the collected information is vital. PostgreSQL, MySQL, and MongoDB are widespread decisions, providing numerous capabilities to deal with numerous information buildings and volumes. They play a pivotal position in organizing and querying information for evaluation and reporting.

Open-Supply Instruments

Leveraging open-source instruments can considerably cut back prices and foster collaboration. They provide highly effective options with out the excessive price ticket of proprietary alternate options.

• Grafana: A preferred open-source platform for visualizing metrics and logs from numerous sources. It offers an intuitive interface for creating dashboards and monitoring key efficiency indicators.
• Prometheus: A robust open-source system for monitoring and alerting. It collects metrics from numerous sources, shops them, and permits for advanced queries and alerting guidelines.
• InfluxDB: An open-source time-series database. It is particularly designed to deal with the excessive quantity of information generated by IoT gadgets.
• Node-RED: A visible programming device for connecting completely different {hardware} and software program parts. It permits customers to create flows and automate duties without having to jot down advanced code.

Comparability of Instruments

A comparative evaluation highlights the strengths and weaknesses of varied instruments, aiding in knowledgeable decision-making.

Software	Performance	Execs	Cons
Grafana	Visualization and dashboards	Consumer-friendly, customizable, and helps a number of information sources	Restricted information storage, requires further instruments for information assortment
Prometheus	Monitoring and alerting	Scalable, excessive efficiency, and powerful question language	Steeper studying curve, requires extra configuration
InfluxDB	Time-series database	Optimized for time-series information, environment friendly storage	Restricted querying capabilities in comparison with some relational databases
Node-RED	Visible programming for IoT	Simple to make use of, visible interface, low barrier to entry	Restricted scalability, not ultimate for advanced purposes