its called iUsers
iUsers is a new tweak from Pedro Franceschi that lets you add user accounts to your iPad.
The accounts are added by selecting iUsers from the Settings app. When adding a new user you can select the username, password, and whether the user has admin privileges.
A new button on the lockscreen brings up a popup to switch users.
Each user retains their own SpringBoard layout and app data.
people reporting; slow, constant rebooting, freeze, etc, etc.... so stay away for now!!!!!!