When tapping the 4 corners, the screen does not always lock. It stays logged in with the last employee's permissions. This is a security issue because anyone can walk up to the Clover Mini and search orders or have whatever permissions were held by the last employee logged in.
This issue has been semi-fixed. Before it used to never lock when tapping the 4 corners. Now it sometimes will lock the screen but sometimes it would stay logged in with the last employee.