I am looking at implementing NFC door locks for common areas of a multi-tenant building. The tricky part is, I don’t want to have to open an app and manually click it. The ideal use case is somebody gets close with their phone (registered as an approved device) and it just unlocks.
It looks like iOS and Android are both pretty restrictive about background NFC – is the easiest thing to do right now a separate NFC sticker on the phone case? Is the new “CarKeys” API a workable solution?