Windshield sticker for the 'if my car is in your way, scan me' moment. Daytime — direct call. Night — silent webhook ping so nobody calls you at 3am.
Edge logic flips the destination by time of day. From 08:00–22:00 the QR triggers a call. After 22:00 it routes to a Telegram thread or fires a silent webhook alert so neighbors don't ring at night.
Free tier includes 1 permanent QR and the recovery key — upgrade the slot with the exact modules this case uses whenever you need them.