McDonald's Puts DNA Spray Over Its Doors
Australian outlets add devices after holiday robberies
By Neal Colgrass, Newser Staff
Posted Jan 13, 2013 2:25 PM CST
A McDonald's restaurant sign advertises to Chicago Cubs fans across the street from Wrigley Field in Chicago, Monday, April 20, 2009.    (AP Photo/Charles Rex Arbogast)

(Newser) – Like a free DNA spray with that? Following a spate of robberies, McDonald's outlets across Australia are installing DNA-spray devices over their doors to douse fleeing robbers with an indelible mark, the Daily Mail reports. The non-toxic spray will mark alleged thieves with a DNA code that lasts for months and shows up bright blue under the light of police UV flashlights—tying crooks to the scene of the crime. "It's a great deterrent," a McDonald's spokeswoman tells the Sydney Morning Herald.

During a trial period, she says, six restaurants "experienced zero robberies and reduced instances of anti-social behavior." Now the invisible spray is being installed in all 780 Australian McDonald's outlets. The chain bought the systems from British security company SelectaDNA after three restaurants were robbed in Sydney over the holidays. The only glitch now: accusations that cops are getting free burgers for stepping up patrols around McDonald's. "That's a complete furphy," says an inspector. "A while ago there was a corporate discount but police don't get McDonald's for free." (Store owners in the Netherlands have already been using DNA spray and DNA crayons.)

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Oct 11, 2014 9:28 AM CDT
furphy... now that's a great "Aussie" word!
Jan 15, 2013 1:56 AM CST
Aww, they left out all the cool scientific stuff. Pssht. This stuff is different than 'just dye' because it's actually a synthetic version of DNA- no, you can't get a virus from it, blood and DNA are different things- that has a dye component to it. This is pretty cool because it means that the company that sells this dye can design a specific DNA sequence for each location/buyer/whatever so that whenever a person is caught with the synthetic DNA (which lights up under UV light after the application of a chemical, just like normal DNA) the investigators can then send the synthetic DNA back to the lab to have it sequenced, so the actual location that the person in question picked up this DNA can be identified. Anyone in law enforcement (well, anyone, really) can see the value of having a dye that will tie a suspect to a specific scene of a crime rather than having a dye that just indicates the person has been at one of thousands of possible locations (which would be the case if the company just sold run of the mill invisible dye) In essence, it's like the criminals are getting a big, invisible stamp with the location of the place they were on their hands. Pretty cool. But of course, tying a criminal to the crime scene is only on component of the investigation. Still, it could prove to be quite useful, I imagine.
Jan 14, 2013 7:33 PM CST
The Australian government confisgated all the firearms of the "law abiding" citizens so only the criminals are armed. Crime is UP significantly in ALL measured catagories - gee, you mean taking away firearms didn't make them SAFER? Who wooda guessed? Maybe McDonalds should try BRICKS about the door. Read the following article if you want to know the TRUTH about Australia's taking firearms away from innocent people: