In 1977 start a collaboration between Brian Dalrymple and the Xerox Research Centre to develop a new method of using an argon ion laser to detect fingerprints by inherent fluorescence. The OPP became the first police agency in the world to use this new technology on a regular basis. The laser technique is a non-destructive method that allow the use of other fingerprint detection following the laser observation. This use of the laser also lead to the use of new staining chemicals on fingerprint to render them fluorescent. This technique can also detect fingerprints that could not be revealed by other methods.
