When the Reflective Particle Tag is illuminated and photographed from multiple angles, the reflections from the suspended micaceous hematite particles create a set of images that uniquely identifies the tag and the object to which the tag is applied. A numbered fiducial embedded in the tag identifies the tag and serves as a reference for the tag reader. The DNA Universal Reader, a computer-based tag reader, automatically illuminates and records images from 20 different angles each time a Reflective Particle Tag reading is made. These images are recorded by the reader and automatically compared to the tag reference images recorded when the RPT is initially applied. A portable field kit contains all the materials necessary for surface preparation and application of RPT-2 under field conditions.
Individual packets contain pre-measured containers of hematite particles and polymer blend.
A battery-powered UV lamp and all other tools required for tag application are included in the field kit. Tagging items with RPT-2 permits them to be fingerprinted so that they can be uniquely identified by inspection. Sandia National Laboratories Dept. The CMC is operated by Sandia National Laboratories to promote the application of unclassified, exportable technologies for cooperative monitoring. This fact sheet is intended to provide information, but does not constitute endorsement by the CMC of any particular product or supplier.