Patent ID: 11922265
Assignee: INTELLIGENT MATERIAL SOLUTIONS, INC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A method for authenticating identification cards, comprising:
(a) emitting at least one wavelength of light to be at least partially absorbed by a plurality of phosphor particles arranged in a pattern on a card;
(b) visually detecting a pattern of the plurality of phosphor particles on the card based on at least one additional wavelength of light emitted from the plurality of phosphor particles after or during the emission of the at least one wavelength of light;
(c) receiving the at least one additional wavelength of light at a detector; and
(d) identifying a location on the card of the plurality of phosphor particles, and identifying a rise time of the plurality of phosphor particles, a decay time of the plurality of phosphor particles, or both.