Alternately, it could unlock the phone while also erasing specific parts of it, like message history and call logs, potentially replacing them with something you’d set up previously.
Edit: and obviously it would disable the duress pin and set the unlocking pin to it.
The problem is that there’s a very valid reason to have those that has nothing to do with the tenants. There’s no way in the world I’d have an outdoor pool without a security camera for liability reasons alone, let alone trespassers.
Alternately, it could unlock the phone while also erasing specific parts of it, like message history and call logs, potentially replacing them with something you’d set up previously.
Edit: and obviously it would disable the duress pin and set the unlocking pin to it.