Patent · US Active

Anti-passback algorithm for reading a public or secure object

US9990485B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

ASSA ABLOY AB · SE

Inventors

Toby Mark Padilla · Lakewood, US
David Andresky · Lafayette, US
Bryan Holloway · Irvine, US
Kieran Wingfield · Cardiff, GB
Michael Margraf · Berlin, DE

Key dates

Filing date	Sep 25, 2015
Grant date	Jun 5, 2018
Priority date	—
Expiry date	Apr 26, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG07C2209/08
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An anti-passback algorithm for an access control system is described. The anti-passback algorithm prevents the use of valid credentials to gain access to an access-controlled area by more than one person within a given period of time. The algorithm is capable of distinguishing between credentials intentionally presented to the access control system and credentials that are unintentionally read by the access control system. Certain variables may be set by the access control system manufacturer or a trusted individual to adapt the algorithm for applications.

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