Police who need to dust suspicious packages for fingerprints could someday rely on a robotic device to do this dangerous work.
Bomb disposal robot with RAFFE attachment
Image: Kristian Dixon
Finger print samples obtained by RAFFE
Image: Kristian Dixon
The device, developed by scientists from U of T and the University of Calgary, offers a safe way to collect fingerprint evidence from packages that might be too dangerous for a human to approach. A study describing the development of the device, called a Robot Accessory for Fuming Fingerprint Evidence (RAFFE), appears in the March 2004 issue of the Journal of Forensic Sciences. "With the recent terrorist threats, police would want to collect as much evidence as possible," says lead author Kristian Dixon, a third-year U of T engineering science student. "But if a bomb were to go off while an officer was manually dusting the package, he could either lose his hands or his life."
Currently, police robots simply destroy suspicious packages - along with any fingerprint evidence. RAFFE consists of a small box with a heating element, cartridge of Superglue and short pipe. Using remote controls, police direct the robot to the package and heat the Superglue in the box. The glue produces fumes that are piped towards the package. The fumes, containing cyanoacrylate, react with the oils and moisture in the fingerprints, turning them white. The fingerprints can then be photographed using the robots high-definition camera prior to the safe disposal of the package. The study was funded by the Natural Sciences and Engineering
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