For owners
How do I create my first door?
Sign up at /owner/signup, log in, and use the door creation flow on your dashboard. Free accounts include one active door.
How do I share my QR code?
From the doors page, open the door's QR. You can download it as a PNG/SVG and print it, or share the short URL directly. Visitors who scan the QR or visit the URL can leave a message — no app required for them.
How do I reply to a visitor?
Open the submission from your dashboard or from the push notification. You can send a short text reply or record a brief audio reply. The visitor sees your reply at a unique link sent only to them.
Can I silence notifications at night?
Yes — the Settings page has a quiet-hours window. Knocks are still accepted during that window, but push notifications are deferred until the window ends, so a 3 a.m. scan doesn't wake you up.
How do I delete my account?
From the Settings page, type DELETE in the danger-zone confirmation, enter your password if you signed up with a password, and submit. Your account is logged out immediately and permanently destroyed after a 30-day grace period.
For visitors
What is this page I just scanned?
You scanned a KNOC code, which is a private digital doorbell. The owner of the location uses it to receive messages without giving out a phone number or installing a third-party app.
What happens to my photo, audio, or message?
It goes only to the owner of the door you scanned. It is not posted publicly, not used for advertising, and not used to train AI. See the Privacy page for the full picture.
How do I see if the owner replied?
After you submit, you'll see a unique link. Bookmark or save it — that's the only place where the owner's reply will appear. If the owner replies by SMS and you provided a phone number, you'll also receive a text.
Still need help?
Email us at knoc-app@protonmail.com. Please include the door slug (the short code at the end of the URL you scanned) and an approximate time so we can find the right record.