Signtone ( The Audio QR )
Hear it..Sign it
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Signtone ( The Audio QR ) - Hear it..Sign it

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QR codes can be slow, and lines build up fast. Signtone replaces static codes with audio sign tones—a frictionless audio QR technology that lets organizers connect with any place in seconds. Whether you’re hosting a conference, running a retail promo, or radio ad, all you need is a speaker. Broadcast: The organizer plays a Signtone over any standard speaker. Detect: The Signtone mobile app picks up the Signtone in seconds. Connect: Users tap once to check in, claim deals, and join waitlists.

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Here is my first invention. It is almost like an audio QR code.

Love the waitlist perk at events, ended up snagging a discount on a cute shop near the venue. The whole thing felt pretty smooth to use, just wish the conference schedule loaded faster on my phone.

Would love to see a way to save or bookmark interesting store deals from the map view, so I can check them out later when I have time. Right now it feels like deals just float by if I don't tap on them immediately.

Maker

Hey Product Hunt!

QR codes can be slow, printouts get damaged, and lines build up fast. Signtone replaces static visual codes with audio sign tones—a frictionless audio QR technology that lets organizers connect with any place in seconds.

Whether you’re hosting a conference, running a retail promo, or broadcasting a radio contest, all you need is a speaker.

How It Works

  • Broadcast: The organizer plays a Signtone over any standard speaker.

  • Detect: The Signtone mobile app picks up the Signtone in seconds.

  • Connect: Users tap once to check in, claim deals, and join waitlists.

One Technology. Endless Applications.

  • Conferences & Events: Eliminate check-in desk bottlenecks. Enable simultaneous entry for thousands while delivering session agendas, slide decks, feedback forms, and 1-click venue Wi-Fi access.

  • Retail & Local Store Deals: Stores play audio tones to push exclusive daily discounts and reward loyal shoppers as they walk through the door.

  • Smart Waitlists & Queues: Hear the tone to auto-enter a queue. Organizers send a push notification when your turn arrives—no physical buzzers or paper slips needed.

  • Radio Ads & Sweepstakes: Broadcast Signtones over FM radio or live audio streams so listeners can enter contests or claim offers right from their couch.

Engineered for Speed & Privacy

  • US Patent-Pending Tech: Built on proprietary ultrasonic audio encoding methods that detect signals.

  • 100% On-Device Privacy: Sound waves are parsed locally on the phone. Zero raw audio is ever recorded, saved, or uploaded to the cloud.

  • No Special Hardware: Works with any existing PA system, speaker, or phone. No camera scanning, NFC tags, or custom hardware required.