Ultrasonic near-field communication
View Patent ↗Systems and methods for near-field communications with a mobile device are disclosed. In one embodiment, a computer-implemented method for near-field communication may comprise: detecting, by a source device located at a point-of-sale, the proximity of a receiving device; encoding purchase data on an audio signal with one or more ultrasonic frequencies; and transmitting the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device.
1. A computer-implemented method for near-field secure communication, comprising:
detecting, by a source device located at a point-of-sale, the proximity of a receiving device;
generating a key id for the source device, wherein the key id is stored on the source device;
padding purchase data;
encoding the purchase data with the key id on an audio signal with one or more ultrasonic frequencies; and
transmitting the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device in response to detecting the receiving device.
2. The method of claim 1 , wherein the purchase data is padded by adding zeros to the data and/or adding data and time to the data.
3. The method of claim 1 , wherein the purchase data is encoded with AES-128.
4. One or more computer-readable non-transitory storage media embodying software that is operable when executed to:
detect, by a source device located at a point-of-sale, the proximity of a receiving device;
generate a key id for the source device, wherein the key id is stored on the source device;
pad purchase data;
encode the purchase data with the key id on an audio signal with one or more ultrasonic frequencies; and
transmit the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device in response to detecting the receiving device.
5. The media of claim 4 , wherein the purchase data is padded by adding zeros to the data and/or adding data and time to the data.
6. The media of claim 4 , wherein the purchase data is encoded with AES-128.
7. A system comprising:
one or more processors; and
a memory coupled to the processors comprising instructions executable by the processors, the processors being operable when executing the instructions to:
detect, by a source device located at a point-of-sale, the proximity of a receiving device;
generate a key id for the source device, wherein the key id is stored on the source device;
pad purchase data;
encode the purchase data with the key id on an audio signal with one or more ultrasonic frequencies; and
transmit the encoded purchase data to the receiving device, wherein the encoded purchase data is transmitted using a speaker of the source device in response to detecting the receiving device.
8. The system of claim 7 , wherein the purchase data is padded by adding zeros to the data and/or adding data and time to the data.
9. The system of claim 7 , wherein the purchase data is encoded with AES-128.