Charles G Wheeler

US Patent:

20230012773, Jan 19, 2023

Filed:

Sep 24, 2022

Appl. No.:

17/952241

Inventors:

- Bethesda MD, US
GREGORY ALLEN LLOYD - BETHESDA MD, US
HSIN-CHENG CHIU - BETHESDA MD, US
Steven Mark Bryant - Sterling VA, US
Charles Wheeler - Bethesda MD, US

International Classification:

G07C 9/21
G07C 9/00

Abstract:

A physical access control system enables acceptable portal entry codes upon receiving each physical access request by operating on the elapsed time from a previous physical access request to generate a temporal credential. The controller receives a plurality of physical access requests from a plurality of mobile application devices. Upon authenticating the first access request, the controller eliminates repetition from the space of acceptable successor requests from each mobile application device. Monotonic nonces advance the range of temporal code matches. Entry code generation is decentralized to distributed application devices and is inherently unknowable until a successor access request is initiated by the same application device.

US Patent:

20230019653, Jan 19, 2023

Filed:

Sep 24, 2022

Appl. No.:

17/952243

Inventors:

- Bethesda MD, US
GREGORY ALLEN LLOYD - BETHESDA MD, US
HSIN-CHENG CHIU - BETHESDA MD, US
Steven Mark Bryant - Sterling VA, US
Charles Wheeler - Bethesda MD, US

International Classification:

G07C 9/21
H04L 9/32

Abstract:

A physical access control system enables acceptable portal entry codes upon receiving each physical access request by operating on the elapsed time from a previous physical access request to generate a temporal credential. The controller receives a plurality of physical access requests from a plurality of mobile application devices. Upon authenticating the first access request, the controller eliminates repetition from the space of acceptable successor requests from each mobile application device. Monotonic nonces advance the range of temporal code matches. Entry code generation is decentralized to distributed application devices and is inherently unknowable until a successor access request is initiated by the same application device.

US Patent:

20190325673, Oct 24, 2019

Filed:

Jun 29, 2019

Appl. No.:

16/458044

Inventors:

AVI ROITMAN BARDACK - BETHESDA MD, US
GREGORY ALLEN LLOYD - BETHESDA MD, US
HSIN-CHENG CHIU - BETHESDA MD, US
Steven Mark Bryant - Sterling VA, US
Charles Wheeler - Bethesda MD, US

International Classification:

G07C 9/00
G06F 16/908
G06F 16/23

Abstract:

A physical access control system enables acceptable portal entry codes upon receiving each physical access request by operating on the elapsed time from a previous physical access request to generate a temporal credential. The controller receives a plurality of physical access requests from a plurality of mobile application devices. Upon authenticating the first access request, the controller eliminates repetition from the space of acceptable successor requests from each mobile application device. Monotonic nonces advance the range of temporal code matches. Entry code generation is decentralized to distributed application devices and is inherently unknowable until a successor access request is initiated by the same application device.

US Patent:

20180183835, Jun 28, 2018

Filed:

Dec 25, 2016

Appl. No.:

15/390507

Inventors:

Steven Mark Bryant - Sterling VA, US
Charles Wheeler - Bethesda MD, US

International Classification:

H04L 29/06

Abstract:

A wireless apparatus controls physical access through a portal by forward verification of one-time-use codes submitted by a mobile application device. A system forward verifies a single physical access control code upon each successful physical access request. The apparatus sets a flag that triggers an action when a one-time-use code is received out of sequence. The controller receives a plurality of physical access requests from a plurality of mobile application devices. The controller determines for each mobile application device a sequence of access requests comprising at least a first access request and a second access request. Upon authenticating the first access request, the controller writes into storage a forward verification code specific to an immediately subsequent second access request from the same app device. Upon receiving a successor, the controller performs an authentication process by matching the stored forward verification code associated with the predecessor.