This is not NEED to have - but would be really NICE to have :)
We are often 3 employees using the same cash register. This means that we switch almost between each sale. It would help us a lot if there was an option to force pin code after each sale.
Suggestion:In the option for Auto-Lock Screen a new option could be added:-Lock after each sale(auto lock 10 seconds after receipt is printed)
BONUS: when locking after each sale the risk of bad people doing something to the cash register is minimized.