Check-in code
Put this on the wall
A code anyone can scan to check in at 1990. Free to print, free to scan, and it needs nothing from you: no account, no claim on the listing, no arrangement with us.
Print this, or show it on a screen. Anyone who scans it can check in with a free account and earn the Show Floor stamp; there is nothing to sign up for and nothing to pay, at either end.