Machines get pairing codes. People just log in — tap your face instead →
Setting up a kiosk or tablet? A signed-in admin cuts the code on HQ → The glass. Type it here and the screen stays paired until it's revoked.
An artist after their own page needs no code at all — tap your face and type your PIN, or the desk taps your face on The Book → the key rack and you scan it with your phone.