Coppers taunt London burglars with cruel Valentines

Coppers in East London have some kind of "forensic" tech that they're applying to goods in homes that have been repeatedly burgled. The system is called Smartwater, and they're celebrating its emergence by sending Valentine's Day cards to villains and cat-burglars with smarmy taunts inside:

Known offenders in the area will meanwhile receive a card signed by Chief Superintendent Vicki Marr that reads on the front, "Thinking of you and what you do at this time of year".

Inside, the message turns more sinister: "Roses are red, violets are blue, when Smartwater is activated, it's over for you."

Link (via Fark)