..see my adjacent reply: it's the universality of access (kindof) that's tempting in replacing a physical keypad with a "virtual keypad". "Scan to enter => 123

..see my adjacent reply: it's the universality of access (kindof) that's tempting in replacing a physical keypad with a "virtual keypad". "Scan to enter => 1234 => Access Granted!" Yeah, yeah, hackers, open API endpoints, DOS, rate limiting, etc., but it's an interesting use case: "Virtual Keypads" near doors.