Patent · US Active

System of providing a fixed identification of a transponder while keeping privacy and avoiding tracking

US9418249B2 · kind B2 · utility

4Cited by

2References

15Claims

0Family size

Assignee

NXP B.V. · NL

Inventors

Peter Thueringer · Graz, AT
Hans De Jong · Eindhoven, NL
Bruce Murray · Winchester, US
Heike Neumann · Hamburg, DE
Paul Hubmer · Hart-Purgstall, AT
Susanne Stern · Graz, AT

Key dates

Filing date	May 12, 2009
Grant date	Aug 16, 2016
Priority date	—
Expiry date	Feb 14, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/2129
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Transponder (180) having stored a fixed identification number, which expands said identification number with a random number, encrypts said expanded number with a key, and sends it to a reader (160) on its request. Reader (160), which on request receives an encrypted number from a transponder (180), decrypts a received encrypted number with a key, which was also used by the transponder (180), and extracts a fixed identification number associated with the transponder (180).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.