What is ID? ID-password

How is the recognition of the necessary data? You downloaded the game and it provided your data. Or went again to the site, and he would recognize you. What is the mechanism of implementing such technology the ability to recognize who is who among the people? Detection is possible precisely because of the IDs. But what is ID?

Question or identify objects in programming and systems engineering

Under understand unique ID attribute that will allow you to select the desired object among many others:

1. A Unique feature of the object or subject access.
2. A Unique name for the electric signal transmitted inside the device or the functional circuit.
3. The Lexical token that identifies the entity. An analogy can be drawn with a unique name. Exists for possible references to it in the system.

Theoretical base ID

In General, the IDs put up a few requirements. One thing in common – is the uniqueness and the ability to search a particular object on it. Also, depending on the environment the implementation can be put forward demands to the contents of the ID: numbers only, or set in Latin, or something like that. Nearly all cannot be used as identifiers reserved system words. This is what ID. This brief theoretical course can be considered complete.

Using the ID protection

What is the ID for data protection? Suppose you have a situation where scattered local network. It does not have to be connected to third party computers, as this may indicate a leak. How to ensure safety online? Each computer has a unique number, which by default are known only to him. Configures the working Protocol of the local network, according to which to connect to the computers in a particular list. Then follows this list to enter all rooms of computers – and protection based on the ID ready. This ID code copes with the responsibilities of a password within the network.

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Note that this usage, however, has certain disadvantages such as the ability to gain access to one of the computers and sending requests from it to the LAN. But this aspect is not limited to the possibility of applying. So, with the help of ID you can configure the level of access on different machines (which default will have a different level of protection). Then new employees or does not have the appropriate access level will not be able to send commands and by mistake or intentionally to harm the company. That is, will a scheme that uses ID-password, but “know him” will be a limited number of people (computers).

Using the ID in application programs

And used the identifiers in application programs, such as assistant accountant or games? Yes, and how! If we consider the example with the game has separate IDs for each computer user, each stored things in a backpack and bag. Your ID (even if temporary) and have the items that are used in games. Their presence allows you to bind lines of code to certain pictures, which thanks to the keyboard or the mouse can interact with the player.

In the programs their IDs to every field into which you enter information for further processing. Thanks to its identifier can then be retrieved from the database and to use for its intended purpose. They can be installed which has a user access with a certain access level.

Using the ID for recognition in the online services

Did they Apply here, and if so, what is ID in network technologies? Found the application IDs, and online services. Let's consider the simplest example of a social network. How are different users? Thanks to a unique identifier that contains even the url of the page of any user. Using the ID system determines what should be displayed in correspondence with what people, what pictures and videos you want to display in your personal user page. But even that is not the only limitation: for example, when entering each new address for a specific page identifier, the system asks to enter the password to check whether the owner of this profile or not. Even apps inside social networks using the iframe ID for convenient operation of the user with application based on its profile data.

Use your credentials to any site which has user creation. Technology is being used in IDs games, which require access to the global network. But does he need? Let's say you play somewhere in the game whether the computer constantly sending data? No, this is not necessary – after going through the process of identification with this open flow of communication, and the service knows what the other side is you. And things like the ID of the items in Minecraft or another game, are transmitted just to identify the user, andwhen you close the client and open it again they will come again.

But this entails the need to observe certain safety precautions. Thus, the communication stream can close itself after a certain time (usually several hours), and may not even be closed (if not provided). So if you do not want the access profile on the site received by someone else who has access to your computer, no harm will protect yourself by pressing the exit button each time you go.

Conclusion

That's what provides the ID, and so the broad aspects of its application. But even in General terms, all was not lit – so should tell more about the identifiers in microelectronics, types of identifiers in different systems (considering the most common) and a number of other things in which they are used. Now you can use this knowledge to create added security in your home network of computers, or for understanding the complexity of network services.