Resources Contact Us Home
Secure product authentication tags

Image Number 4 for United States Patent #7744130.

A tag with features to enable its authenticity to be determined includes a hidden code intermixed with a visible pattern such that the hidden code is not readily detectable under ambient light condition, without the use of a specially designed reader. In one embodiment the tag is formed with a first layer containing a hidden code, formed of reflective elements, which overlies a second layer which is designed to absorb light having a predetermined wavelength (e.g., IR light). The hidden code can be detected by projecting a light source having the predetermined wavelength (e.g., an IR source) at a predetermined angle on the tag and using a sensor to sense the reflection from the tag.

  Recently Added Patents
Imaging apparatus, control method thereof, and program
Implantable neuro-stimulation electrode with fluid reservoir
Vehicle control apparatus
Light emitting device
Image forming apparatus and image forming method
Signal processing apparatus, display apparatus having the same, and signal processing method
Method and apparatus for linking a web browser link to a promotional offer
  Randomly Featured Patents
Drying device for use in detailing motorcycles
Cell inferiority test circuit
Repeating coin-operated mechanism
Waste solvent receptacle
Apparatus and method for processing of mass spectrometry data
Card connector
Process for producing a board for gliding over snow, reinforcement, and board for gliding over snow comprising such a reinforcement
Material flow and air-quality protection, in a particulate-material gun usable with silica fume
Radar detection method, notably for airborne radars implementing an obstacle detection and avoidance function
Printer control system