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- RSA Labs
Password-Less Ultrasonic Authentication is a novel technique that may be added to the suite of Multi-factor authentication methods. Utilizing randomly generated token codes, a registered mobile device can be a communications medium for the requesting device.
Utilizing a registered mobile device as a transmission medium, a token code may be delivered via ultrasonic sound waves to a requesting device. This simplifies the 2nd factor of authentication by minimizing manual processing of a token code.
When a user is prompted for a token code in a browser, a PLUS-Auth request can be generated utilizing a laptop / PC speaker. The mobile device, after receiving the PLUS-Auth request decrypts the message and metadata. The message is validated and a PLUS-Auth response is generated then sent back to the laptop or PC. Once validated by the application access may be granted as required.
The ubiquity of audio provides a simple and straightforward method of authentication reducing user friction and minimizing auth failures.