KNOC

A privacy-first digital doorbell

Create a QR doorbell for your door. Visitors scan, leave a knock, and you reply from the KNOC app.

Download on the App Store
KNOC app showing the visitor-messages inbox
Scan to download on iPhone
Scan to download on iPhone Available on the App Store

How the QR doorbell works

  1. 1 Print your QRPut a KNOC code where visitors can find it.
  2. 2 Visitors scan & messageThey leave a message — no app, no account.
  3. 3 Reply from your phoneAnswer with text or voice. Your number stays private.
How it works →

No app for visitors · No hardware · No phone number shared · Privacy-first