US 12,488,617 B2
Porous platen for biometric scanning
Daniel Henri Raguin, Jupiter, FL (US)
Assigned to HID Global Corp., Austin, TX (US)
Filed by HID Global Corp., Austin, TX (US)
Filed on Dec. 20, 2023, as Appl. No. 18/390,799.
Prior Publication US 2025/0209848 A1, Jun. 26, 2025
Int. Cl. G06V 40/12 (2022.01); G06V 40/13 (2022.01)
CPC G06V 40/1353 (2022.01) [G06V 40/1324 (2022.01)] 18 Claims
OG exemplary drawing
 
1. A biometric scanning system, comprising:
a platen comprising a porous region sized and shaped for contact with skin of a subject, the porous region defining respective pore structures to house a liquid for wetting the skin when the skin is in contact with the porous region;
a light source configured to illuminate the platen;
an imaging sensor configured to image the platen including imaging topological features defined by the skin in contact with the porous region, the topological features contrasting with a background field illuminated by the light source;
a reservoir for the liquid; and
a channel or cavity fluidically coupling the porous region with the reservoir;
wherein the contrast is enhanced when the liquid is present.