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The answer is they all use DNA, and forensic science techniques to link people to events.
Most of us are aware of how DNA is extracted, tested and analyzed to determine the father of a born or unborn child. Tests of this kind are a common occurrence today. They are used in legal and child custody and support cases throughout the world.
But, have you ever heard of using DNA to track down thieves who rob a McDonald’s?
Well, that is exactly what McDonalds is doing with the help of SelectaDNA. SelectaDNA is a British security firm. They have devised a clever technology that automatically sprays a harmless, DNA coded solution directly on thieves as they scramble out the door of their fast food restaurants.
It seems that several of the McDonald’s locations in Sidney have experienced a rash of robberies over the recent Christmas and New Year holidays. Their security concerns lead them to conduct a trial of the SelectaDNA technology at six of their busiest Sidney restaurants. McDonald’s says that the trials were successful and will begin installing the SelectaDNA technology at more locations across Australia.
SelectaDNA introduced their “Intruder Spray” solution in 2008. The solution contains a unique DNA code and UV tracer. Once sprayed on an intruder, it provides an irrefutable link to the crime scene. A sample of the solution as small as the top of a pin is all SelectaDNA needs to link the suspect to the scene of the theft.
The release of the “Intruder Spray” can be integrated with existing security systems. So once an intrusion is detected, the solution can be sprayed at the appropriate time and location. The solution is too small to be seen and will remain on the intruder for several weeks.
The solution clings clothing fibers and creases in the skin. Despite multiple washings, the spray remains for up to six months. The spray remains indefinitely on items such as hats, bags and weapons.
Because of the UV in the solution, the police are able to detect the SelectaDNA solution by using a UV torch. Under UV light, the spray emits a bright blue glow. The police send a sample of the spray to SelectaDNA for a DNA analysis.
SelectaDNA claims that with the installation of this advanced security system, they are able to deter thefts and burglaries significantly. They also provide the forensic evidence that law enforcement needs to link the suspect with the crime scene.
It seems ironic that human DNA is normally left at the scene of an incident. However, with the SelectaDNA technology the suspect takes the synthetic DNA with them.
The great news is that either way we have the scientific tools that provides the linkage and connects the dots.
Image Credit: _skynet
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