Method of authenticating an object
OwnerThomas D. Pawlik, Judith A. Bose +2inventors
InventorsThomas D. Pawlik, Judith A. Bose, Ronald S. Cok, Nelson A. Blish
Life of this patent
Estimating the term…
Abstract
A method of authenticating an object (12) includes applying indicia (14) to the object, wherein the indicia includes at least two different types of particles which fluoresce upon exposure to light (15) and which have different decay rates. The indicia is exposed to light from a lamp (32) causing the plurality of particles to fluoresce. At least a first image of the indicia is captured with a sensor (22) at a first time and a second image of the indicia at a second time different from the first time. The images are analyzed to determine decay rates of the at least two types of particles and object is authenticated if the decay rates match stored information.
Claims18
A method of authenticating an object comprising:
- applying indicia to the object;
- wherein the indicia comprises at least two different types of particles which fluoresce upon exposure to light and which have different decay rates;
- exposing the indicia to light from a lamp causing the plurality of particles to fluoresce;
- capturing at least a first image of the indicia with a sensor at a first time and a second image of the indicia at a second time different from the first time;
- analyzing the images to determine decay rates of the at least two types of particles;
- and
- authenticating the object if the decay rates match stored information.
Dependencies are inferred from the claim text.