To find narcotics hidden in cargo or mail has always been a challenge as substances are concealed making screening a time consuming and cumbersome process. Studies have shown hiding places have trace of low quantity substance on the outside. The Delta R is especially designed to use these important tells in our advantage.
The Delta R Technology uses differential reflectance spectroscopy. In short: Light is emitted from the source onto a surface after which the reflectance is captured by spectrograph connected to a camera. The camera can determine a difference called ΔR, hence the name.
The ΔR found is compared within our database to determine if there is a match with illicit substances. System response will indicate whether additional inspection needs to be carried out. Instead of searching all cargo and mail the Delta R can assist in preselecting items for visitation based on whether trace is found, making the process less cumbersome.