I just what to install an app. I don’t want to spend an evening figgering out how to get a PWA to install. I don’t want to consult a form or your git repository to install some package I will use once and will be patched out in the next version.
Depends on how they have set it up but in the ideal it will have be individually linked to a user. Iv heard of cheep complex managers just setting each fob to the same internal id. Meaning you can’t deactivate a fob or track the users. If anything it would be the same as CCTV on the lobby and public spaces of a complex. I would doubt that you would need it to exit as most doors need to let you out without resistance. This is possibly a fight between security and privacy. The other residence in the complex are more concerned with unwanted entries.
Are they booting of an SD card? Mabey is a Pi or WiFi router?