Managers should not be putting their numbers in for voids, discounts, etc in front of staff. They need a way to sign in that can't be copied like a swipe card or QR code.
@sbrockz Please take a look in the beta forums. I see you have a beta badge by your screen name. Square has had this request before and you might be able to find out more information there on this feature request and if and when it becomes an option you could help test it out.