Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Semiconductor device having a first conductive member connecting a chip to a wiring board pad and a second conductive member connecting the wiring board pad to a land on an insulator covering
Image processing system, image processing apparatus, control method for image processing apparatus, and storage medium
Self-assembling surface coating
Post-processing device and image forming system
Methods for predicting cardiac toxicity
Photon density wave based determination of physiological blood parameters
Methods for the production of aligned carbon nanotubes and nanostructured material containing the same
  Randomly Featured Patents
Control for watercraft
Liver enriched transcription factor
Magnetic recording medium and manufacture method therefor
Miniature rose plant named `WEKcatlart`
Composition of conducting polymer and organic opto-electronic device employing the same
Microstrip to waveguide transition arrangement having a transitional part with a border contact section
Compact disk shelf assembly
Head support arresting arrangement
Fitting for connecting two vertically abutting bodies of furniture
Trap system for reducing the entry of flying insects to a defined area