Knocky - A location-aware doorbell that works from any QR code
Knocky
A location-aware doorbell that works from any QR code
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Hunter's comment
Knocky turns a printed QR code into a web doorbell for homes and apartments. Visitors scan it, share their location, and can ring or start a temporary chat only when they are physically near the address. Owners receive real-time notifications and can reply with text, images, or audio. No app is required for visitors, and precise location data is used only for the proximity check.
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A good way to screen who comes to your house.
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