Earlier quoted context omitted.
I have stayed at multiple hotels where a machine hands out key cards or numeric access codes when you enter your name and date of birth. When you leave you just throw the key card into a box or feed it back into the machine. No smartphone necessary.
Thanks for the info. I haven't traveled since COVID, so I don't know how things have changed. I bet hotels made a lot of changes due to COVID. I know this is OT: But I am tired of every business I go to bugging me to use their app for everything. I don't want another app to keep track of, and I do not want to get texts all the time.
If I remember correctly one of my hotels I used sent me a pin code or such via email and then they had a self service to get a keycard, which used the pin code.