The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2020
Filed:
Jan. 09, 2013
Early Warning Services, Llc, Scottsdale, AZ (US);
Ravi Ganesan, West Palm Beach, FL (US);
EARLY WARNING SERVICES, LLC, Scottsdale, AZ (US);
Abstract
The present innovation extends the innovations inherent in our prior work on security and privacy enhanced geolocation to address specific problems of determining the proximity of two Internet connected devices. This could be used for applications such as determining proximity of a user's smartphone to an ATM machine they are using. Or to determine the physical proximity of a shopper and a cashier at a check out line. A straightforward application of the prior work will not suffice, as devices may have very different types of connectivity to the Internet. We solve this problem by placing reciprocal slave servers on each of the devices and giving high weight to the time taken for messages to travel from each device to the slave on the other device. The system can be extended to more than two entities by performing the calculation in a pairwise fashion and using further optimizations.