SmartWater is an intelligent move from BT, as it is a form of dye which stays on the skin of the increasing number of those who are stealing copper wire from their telephone network. Bernie Auguste, head of security at BT Openreach, said: "From now on, any criminal who targets the BT network risks being invisibly tagged with SmartWater, meaning that the police can trace them, and any stolen cable or equipment, back to the scene of the crime.”