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: 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.