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:
Nov. 03, 2020
Filed:
Apr. 25, 2019
At&t Intellectual Property I, L.p., Atlanta, GA (US);
At&t Mobility Ii Llc, Atlanta, GA (US);
Sheldon Kent Meredith, Roswell, GA (US);
William Cottrill, Canton, GA (US);
Brandon B. Hilliard, Woodstock, GA (US);
AT&T INTELLECTUAL PROPERTY I, L.P., Atlanta, GA (US);
AT&T MOBILITY II LLC, Atlanta, GA (US);
Abstract
A method includes receiving, at an access point, an access request from a first device after an expiration of a first passcode. The access request is encrypted based on the first passcode. The method includes making a determination by the access point before an expiration of a usage time of a first passcode usage list that an identifier of the first device is included in the first passcode usage list. The method also includes, in response to making the determination, generating, at the access point, data representing a second passcode by encrypting the second passcode using the first passcode; and sending the data representing the second passcode from the access point to the first device.