A method may include generating, by a computing device, a first dynamic QR code comprising a plurality of QR code frames, each QR code frame transmitted at a first frequency, the plurality of QR code frames comprising non-viable QR code frame(s) and at least one viable QR code frame. The method may include displaying, by the computing device, the first dynamic QR code, the at least one viable QR code frame displayed at a first time. The method may include transmitting, by the computing device, a first pulse to a user device. The method may include capturing, by the user device at the first time and in response to receiving the first pulse, the at least one viable QR code frame. The method may include generating and displaying, by the user device, a second dynamic QR code, causing the computing device to complete a requested transaction.