Trillbit

Provides SDK and data-over-sound technology that transmits encrypted data via ultrasonic sound between devices with speakers and microphones to handle authentication, device provisioning, and contactless payment/ticketing without pairing, typing, or internet. It sells to developers, IT teams, and technology companies building consumer, IoT, and transportation products. It is positioned as an alternative to NFC, Bluetooth, and QR codes, offering offline, cross-platform, device-agnostic operation with standard encryption and low power use.

Key features

• Contactless authentication with sound
• IoT device provisioning and setup
• Passwordless MFA with Passkeys
• FIDO conforming authentication
• Payment and ticketing authentication
• Offline proximity communication
• Cross-platform SDK
• Device-agnostic speaker and microphone support
• AES RSA TOTP encryption
• Low power operation for embedded devices
• No pairing or typing required