I'm pretty sure you have your mobile phone to open your wallets, no?
yeap, they can do it because of security reasons or whatever they want to call it.
so this is really not very good idea. it is just an open apartment with some money in the cabinet..
so maybe no one enter and search, but maybe you're already in danger..
also because cafe may ask for personal data, then bad guy could have them, and your passwords and email.
I'd say potentially this is very high risk