Abstract: Systems and computer-implemented methods for displaying a user interface for contactless in-person transaction via sound are provided herein. The system includes a sender device configured to generate and transmit sound signals that encode a package associated with a transaction request through speakers of the sender device. The system also includes a receiver device having a graphical user interface configured to display one or more graphical elements to guide a user to align the receiver device in a physical orientation that aligns a microphone of the receiver device with a speaker of a sender device, and a wave progressing in a direction that aligns with the speaker's broadcast direction of the sound signals.

Abstract: Embodiments relate to a computer-implemented method for generating a cryptographic key for a user. A user signal associated with the user is input to a machine learning model. The machine learning model has multiple layers and the applied input generates outputs at each of these layers. A vector is extracted from one or more outputs of one or more layers of the machine learning model. A cryptographic key is generated from the vector. The same cryptographic key is generated for different vectors produced by different variations of the user signal from the same user, but different cryptographic keys are generated for user signals from different users. The cryptographic key may be used for various purposes, including authenticating the user, encrypting/decrypting data, and controlling access to resources.

Abstract: Embodiments relate to a computer-implemented method for generating a cryptographic key for a user. A user signal associated with the user is input to a machine learning model. The machine learning model has multiple layers and the applied input generates outputs at each of these layers. A vector is extracted from one or more outputs of one or more layers of the machine learning model. A cryptographic key is generated from the vector. The same cryptographic key is generated for different vectors produced by different variations of the user signal from the same user, but different cryptographic keys are generated for user signals from different users. The cryptographic key may be used for various purposes, including authenticating the user, encrypting/decrypting data, and controlling access to resources.

Abstract: Systems and computer-implemented methods for generating and transmitting transaction requests are provided herein. The system includes a sender device that generates an audio signal encoding a package associated with the transaction request, and a receiver device that receives the audio signal and decodes the audio signal with an application to access the transaction request.