We love the new PIN option but there is a problem with it staying locked. We are a Catholic School who shares our classrooms with many other functions after school hours and would love to lock our boards so they can not be used by anyone but our teachers, we do sign out of our accounts so they are not available. If we put the PIN in and shut the board down, when it gets started back up it has unlocked. This would be a great feature for many schools I presume, is there a way to make this happen? Thank you!