US 12,229,230 B2
Secure transmission and authentication of a user credential
Luke Paxton, Sudbury, MA (US)
Assigned to FMR LLC, Boston, MA (US)
Filed by FMR LLC, Boston, MA (US)
Filed on Sep. 7, 2022, as Appl. No. 17/939,050.
Application 17/939,050 is a continuation in part of application No. 17/687,549, filed on Mar. 4, 2022, granted, now 11,475,110.
Prior Publication US 2023/0283285 A1, Sep. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 21/31 (2013.01); H03M 1/00 (2006.01)
CPC G06F 21/31 (2013.01) [H03M 1/001 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A system for secure transmission and authentication of a user credential, the system comprising:
a first computing device comprising a memory and a processor, the first computing device coupled to a laser diode and a first ambient light sensor within an enclosure;
a second computing device comprising a memory and a processor, the second computing device coupled to an emitted light sensor and a second ambient light sensor within the enclosure;
wherein the first computing device:
measures, using the first ambient light sensor, a first illuminance value of ambient light in the enclosure;
converts a first user credential comprising a sequence of alphanumeric characters and the first illuminance value into a first plurality of analog signals; and
activates the laser diode using the first plurality of analog signals to emit light detectable by the emitted light sensor; and
wherein the second computing device:
generates a second plurality of analog signals corresponding to light emitted by the laser diode and detected by the emitted light sensor;
converts a first portion of the second plurality of analog signals into a second user credential;
authenticates the second user credential;
converts a second portion of the second plurality of analog signals into the first illuminance value;
measures, using the second ambient light sensor, a second illuminance value of ambient light in the enclosure; and
compares the first illuminance value and the second illuminance value to determine whether the illuminance values match.