How to keep the same anonymous account?

[Moin]

How long ago did you create the anonymous account?

@simon

The anonymous account duration minutes site setting sets the period of time that an anonymous account will remain in place after a user has entered and then exited anonymous mode.
This setting defaults to 10080 minutes (7 days.)
if a user exits anonymous mode and then re-enters it within 7 days, they will be logged back into their previous anonymous account. If the user waits longer than 7 days before re-entering anonymous mode, a new anonymous account will be created for them.