Web counter
A visitor - even Counter (English for counter), or Webcounter Hit Counter - keeps track of how many times a web page is called. This usually happens about web beacons, access numbers may be displayed publicly.
If the visitor of a website meant, it is usually technically implemented by a web beacon. Usually, one 1 × 1 pixel is integrated large transparent graphic on the website, which is connected to a server-side script on pages of counter - party. It recognizes each access and counts it in a database. It would be possible, for example, to provide as a provider of Zähldienstes each user its own counter - code that represents such a " picture" and then on the URL a user name or a user ID is not passed and the "Count" can be assigned to a particular user.
Detailed statistics are usually achieved by a mounted on the sides to be counted JavaScript file. It made it possible to read the screen resolution used in the user -installed plug -ins or the browser used. This information is appended to the URL to the image you just mentioned and included a picture into the page via JavaScript, the underlying server-side script can then also save the information available through the browser.
Complete the offer can then geo- databases. Such databases provide a connection between the IP address and location on the earth, an IP address identifies a surfer in the network ( generally really only one registered in the Network adapter, a detailed description is beyond here the frame) and then the owner of the through the counter tracked site ads, which regions of the world visitors come. However, it is not possible to exactly determine the position of the IP address. For example, T-Online has an IP address pool and assigns specific users in the room " Cologne / Bonn " random addresses so that a more accurate determination as " Cologne / Bonn " is not possible in this case.
Another possibility to realize a visitor, is to incorporate a script on the website, which is run on the server. In this case, the maximum flexibility in terms of appearance and configurability can be achieved since is not resorted to an external service.