Q-Connect Counterfeit Detector Pen (10 Pack) This Q-Connect detection pen helps identify counterfeit notes to protect against fraud. Simply apply to a note & if the ink appears brown or black, the note is most likely counterfeit. The detector pen has a 96% rate of accuracy on bank notes of all denominations. Great for retail & cash handling businesses, this pack contains 10 detector pens. Features Fraud detection pen to identify counterfeit notes Ink appears brown or black if note is counterfeit 96% accurate Great for retail & cash handling businesses Pack of 10 pens Will NOT work on the new £5 & £10 notes