Invisible Ink Used to Catch Criminals

Invisible ink may once have been the domain of joke shops, but recently it has been put to good use – helping to catch criminals. According to the Southland Times, New Zealand police have managed to use, for the first time, invisible ink to detect a man accused of stealing from his own employer.

Police started to use the ink after a retail store owner alerted them that small amounts of money were going missing. The money was duly covered in invisible ink that, when affected by moisture, goes purple, the newspaper reported.

And just 24 hours into the operation another employee noticed that their colleague, a 56-year-old man, had the purple colour on his hands. Sergeant Mike Williams, of Cromwell police, told the newspaper that the man was arrested on completion of his shift and will face charges of theft when he appears in court later this month.

Posted by Johnny McMaster.