Construction-site banner: office hours → on-call agent. Evening → online booking. Night → 3D tour. One QR, three sales motions.
Banner stays up for the whole build. The QR's destination flexes between live agent, online price-locked reservation, and a 3D walk-through across hour-of-day slots; a different weekend rota is a panel edit, because the slots are hours rather than days. Workspaces gate edits per development.
Free tier includes 1 standard QR code. Upgrade to the paid Eternal tier for blockchain permanence and the recovery key.