What is the purpose of the t-code?

Remember that a tracking pixel is nothing but a little piece of html-code containing a transparent image (1 x 1 pixel dimension) that can be inserted in any banner, blog, e-mail or webpage that supports html.

Like this:

 http://visitanalytics.userreport.com/hit.gif

Whenever the website, blog, e-mail or banner containing the tracking pixel is loaded in a web-browser, the tracking pixel will be requested from the server where it is hosted and each request written into a log-file.

By analysing the log file, we can count how many times the tracking pixel has been requested.

However, if both website A and B are using the same tracking pixel like this: visitanalytics.userreport.com/hit.gif ...

...we can't really tell if the request originates from website A or website B.

By adding a t= parameter like this:

http://visitanalytics.userreport.com/hit.gif?t=A

OR

http://visitanalytics.userreport.com/hit.gif?t=B

...we can see if the impression should be counted towards website A or website B when counting the number of requests in the log-files.

In other words; the t-codes are responsible for allocating the right impressions to the right campaign / client.

How did we do?

What is a tracking pixel and how does it look?

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