US 12,219,347 B2
Secure on-demand ultra-wideband communication channels systems and methods
Brian Sullivan, Amersham (GB); Aparna Girish, Fremont, CA (US); Mark Rigby, Rickmansworth (GB); Christian Aabye, Redwood City, CA (US); Mustafa Top, San Ramon, CA (US); Yuexi Chen, Foster City, CA (US); Dinah Sloan, San Jose, CA (US); and Hao Ngo, San Jose, CA (US)
Assigned to Visa International Service Association, San Francisco, CA (US)
Filed by Visa International Service Association, San Francisco, CA (US)
Filed on Aug. 22, 2023, as Appl. No. 18/453,693.
Application 18/453,693 is a continuation of application No. 17/491,402, filed on Sep. 30, 2021, granted, now 11,785,449.
Prior Publication US 2023/0396998 A1, Dec. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 12/03 (2021.01); H04B 1/7163 (2011.01); H04L 9/08 (2006.01); H04L 9/30 (2006.01); H04L 9/32 (2006.01); H04W 12/041 (2021.01); H04W 12/08 (2021.01); H04W 12/106 (2021.01); H04W 12/122 (2021.01); H04W 76/10 (2018.01)
CPC H04W 12/03 (2021.01) [H04B 1/7163 (2013.01); H04L 9/088 (2013.01); H04L 9/3073 (2013.01); H04L 9/3271 (2013.01); H04W 12/041 (2021.01); H04W 12/08 (2013.01); H04W 12/106 (2021.01); H04W 12/122 (2021.01); H04W 76/10 (2018.02); H04L 2209/80 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
forming a communication channel between a user device and an access device, wherein the communication channel is a primary communication channel;
securing the communication channel between the user device and the access device using a user device key pair in the user device and an access device ephemeral key pair in the access device;
generating, by the access device, a session key using at least a private cryptographic key in the access device ephemeral key pair and a public cryptographic key in the user device key pair;
using, by the access device, the session key to secure an ultra-wideband communication channel between the user device and the access device;
determining, by the access device, a distance between the access device and the user device based on the ultra-wideband communication channel;
comparing the distance and a predetermined threshold distance; and
if the distance does not exceed the predetermined threshold distance, performing further communications with the user device over the primary communication channel, the user device being a payment device.