Computers in schools across East Sussex are to be marked with a high-tech security marking in an attempt to prevent thefts.
Sussex Police and East Sussex County Council have launched a scheme to provide a personalised SmartWater marking for each school.
The invisible and permanent ink is visible under UV light and helps trace the owners of stolen equipment.
SmartWater spray systems will also mark anybody breaking into school buildings.
A police spokesperson said: "It will mean that any computer equipment stolen from schools can be much more easily identified.
"And where offenders get sprayed with SmartWater, police will have the evidence to show they were at the scene of the crime."
Sussex Police is paying for a uniquely identifiable SmartWater for each school in the county and will help school staff mark the valuable equipment.
Ch Supt Nick Wilkinson, East Sussex divisional commander, said: "Young people and schools are an important part of our community and we will do everything we can to protect them from being victims of crime."
Councillor David Elkin, from East Sussex County Council, said: "Computers are increasingly important in the education of our young people so it's vital they are made as secure as possible."