I positively hate those loudmouth post cards
and other things that produce awfully loud and shrill sounds. Horribly out of tune seems to be mandatory, too. We hatess them, we doess.
Then again, sounds like most of the ingredients of a basic printed mobile phone are there. If you can print some sort of display, doesn't have to generate light, then watches might be possible too.
The problem with a lot of that embedded stuff, especially RFID/NFC, is that it invites "behind your back" sneakery. Make sure the human at all times knows what's going on, and it's lots more acceptable. So, tickets that light up at the gate, say to show they're not copied, are fine. Embedded trickery that tracks you or changes state without telling you, is not. Follow that simple rule and you get a lot less resistance from your would-be users.