Gregory Todd Lloyd

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.