SmartWater is an anti-criminal system marketed in the United Kingdom by Smartwater Technology Ltd.
It consists of a liquid containing a code which can be read under ultraviolet light. It is intended to be applied to valuable items, so that if they are stolen and later seized by police, their original owner can be determined. Another application is a sprinkler system that sprays a burglar with the (invisible) fluid, which can't be washed off and lasts for months, to generate evidence which connects a suspect to a specific location. mais
