See, that is just not happening to me. Nobody is taking my phone away.
If all they need to do is check a date they can look at it in my hand. If the employee needs to use it elsewhere, I will go with them. If the business does not like having customers standing around a register in the back, and if enough of us insist on consumer safety practices, then the business can modify its behavior. If the business practice to leave the phone with the customer and it is only the employee’s idea to grab the phone and take it away, then the business will know they have a problem employee.
DH and I do not even allow our plastic cards to be taken in restaurants, much less a phone. That is one of the most common ways financial info is stolen. We have both experienced that. It is quite one thing to be warned about it, but it is a nightmare to try to clean it up after it happens. Who knows what data they can scan if they have a phone? One lady had to hand her phone to an employee. He took it away where she could not see him. He made several cash transfers to other private accounts on a bill pay app. Once they get the AP date, there is nothing preventing them from going to another app on the phone. She found out later.
It may be old school to carry cash, but it is so much safer. So, phone stays with me or an all cash transaction. Whatever the business will have to deal with it. We, as consumers do have the right to resist shoddy business practices that put us at risk.