What are the cookies that AB Tasty places?

The AB Tasty solution requires 2 cookies to be placed in the browser of users subjected to tests.

ABTasty
This cookie sends all test data (visitorID, test and variant IDs, timestamps).
It has a lifespan of 13 months.

ABTastySession

This cookie allows us to identify a unique session. It allows us to determine that a new session has begun for a given user. It lasts for the length of the session.

The solution includes the possibility of modifying cookies’ length of validity. For this, go to Advanced settings, then go to Cookies.

If the user does not wish to participate in tests, they can opt-out by adding the “#abtastyoptout=1” parameter at the end of the URL of the site in question.

For example:
http://www.abtasty.com/#abtastyoptout=1

Using this parameter creates a cookie in the browser in order to store the opt-out information.
Other than cookies, the AB Tasty tag stores the list of URLs visited locally in the browser via LocalStorage and SessionStorage. This storage allows us to perform complex visitor segmentation.

For AB Tasty, using cookies ensures that the solution can function correctly and guarantees that the tests carried out are reliable by recognising a visitor as unique each time they visit (remembers that it is the same visitor without actually knowing who it is). In particular, the cookies log which version of the test the visitor is using, with the sole purpose of being able to direct them back to the same version during future visits. This system allows us to avoid causing behavioural differences and consequently lead to misleading results. Under no circumstances do these cookies store any information that identifies visitors.

All the results obtained are compiled and remain fully anonymous. The results focus on user browsing and behaviour: number of visitors, visits, numbers of pages viewed and other information required to measure the performance of each webpage version during a test. They are used to improve the ergonomics and content of the sites visited.
The AB Tasty solution uses "first party" cookies, i.e. they are set by the URL of the website using the AB Tasty service.