[Jhsto]

Another anecdote: some gyms nowadays require an app to check-in and to get the door open. For me, gym is for relaxing, which also means no phone. The one I joined sounded slightly apologetic for charging me 10€ for a physical keycard.

[walterbell]

If their keycard is NFC/RFID, they might consider adding existing NFC GUIDs (e.g. expired transit ticket or small tag on keychain) to their system, so that customers can use a single NFC tag for access to multiple venues.