A computer-implemented method for processing service requests based on information associated with computing devices that communicate via audio communication channels, comprising: receiving (240, 560), by a user computing device and from a service computing device, an audio token via an audio communication channel comprising a first service request identifier and a first image identifier; displaying (250, 610), by the user computing device, a stored image corresponding to the first image identifier and one or more other images, receiving (250, 620), by the user computing device, a second input comprising a selection of the stored image corresponding to the first image identifier; transmitting (250, 630), by the user computing device and to one or more computing devices, the service request identifier, the first image identifier corresponding to the selected image, and a user account identifier associated with the user computing device; receiving (240, 520), by the one or more computing devices and from the service computing device, a second service request identifier, a second service computing device identifier, and a second image identifier corresponding to a second image displayed by the service computing device, the displayed second image corresponding to the first image identifier and being randomly selected for display by the service computing device out of a plurality of stored images; receiving (250, 650), by the one or more computing devices and from the user computing device, the service request identifier, the first image identifier corresponding to the stored image, and the user account identifier associated with the user computing device; determining (250, 670), by the one or more computing devices, that the second image identifier and the second service request identifier received from the service computing device matches the first image identifier and the first service request identifier received from the user computing device, respectively; in response to determining that the second image identifier and second service request identifier received from the service computing device matches the first image identifier and first service request identifier received from the user computing device, retrieving user account information associated with the user account identifier received from the user computing device and service account information associated with the service computing device identifier received from the service computing device; and processing (250, 680), by the one or more computing devices, the service request associated with the service request identifier based on the user account information and the service account information. receiving (240, 560), by a user computing device and from a service computing device, an audio token via an audio communication channel comprising a first service request identifier and a first image identifier; displaying (250, 610), by the user computing device, a stored image corresponding to the first image identifier and one or more other images, receiving (250, 620), by the user computing device, a second input comprising a selection of the stored image corresponding to the first image identifier; transmitting (250, 630), by the user computing device and to one or more computing devices, the service request identifier, the first image identifier corresponding to the selected image, and a user account identifier associated with the user computing device; receiving (240, 520), by the one or more computing devices and from the service computing device, a second service request identifier, a second service computing device identifier, and a second image identifier corresponding to a second image displayed by the service computing device, the displayed second image corresponding to the first image identifier and being randomly selected for display by the service computing device out of a plurality of stored images; receiving (250, 650), by the one or more computing devices and from the user computing device, the service request identifier, the first image identifier corresponding to the stored image, and the user account identifier associated with the user computing device; determining (250, 670), by the one or more computing devices, that the second image identifier and the second service request identifier received from the service computing device matches the first image identifier and the first service request identifier received from the user computing device, respectively; in response to determining that the second image identifier and second service request identifier received from the service computing device matches the first image identifier and first service request identifier received from the user computing device, retrieving user account information associated with the user account identifier received from the user computing device and service account information associated with the service computing device identifier received from the service computing device; and processing (250, 680), by the one or more computing devices, the service request associated with the service request identifier based on the user account information and the service account information.