Web portals read information about the device involv (stationary, mobile) from the Useragent file and provide the corresponding version of the web. Working with analytical, statistical data. The program helps to collect information about visitors who came to the site: what browser was us , what devices were us to access, operating systems us . Participation in authentication. Useragents are us to track unusually frequent requests and prohibit such actions. Parsing. Specialists use elements of automatic collection of necessary information.
In this case, the program imitates users
Trying to overcome the system of server filters. Where User agent is us . Image by vectorpouch on Freepik. Types of User Agent It is worth rich people number data mentioning that various equipment (PCs, laptops, mobile phones) have their own user agents, the rest is determin by the choice of software. They can be divid into several groups. These are significant IT products that form an idea of how widespread a software tool is that simplifies communication with third-party resources.
Browsers The group includes currently existing web browsers from Yandex
Google Chrome, as well as Firefox, Opera, etc. Search engines Search engines such as Yandex, Rambler, and other search engines have why invest in app marketing? user agents, since they also connect with web resources. Game consoles When using a web browser on Xbox, the Play Station gadget also uses the network, so the presence of User agents here is justifi . Link Monitoring Services There are special services design for monitoring reference material.
They include user technologies
Readers (e-books) Most modern book gadgets use. Wi-Fi, have the ability to interact with the browser to achieve their minimum goals. So material data they require the above-mention user functionality on the network. User Agent in robots.txt The software tool locat in the robots file indicates that the search engine is instruct to act according to certain directives.