An anti-theft scheme for schools in Nottinghamshire which uses microscopic technology is being extended.
Smart Water is an invisible liquid which includes tiny particles, each containing a nine-digit number which is unique to the school.
It shows up under ultra violet light, so that police can identify where stolen property has come from and then charge the offender.
Teachers will be given a demonstration at the Holme Pierrepont sports centre.
Smart Water is difficult to remove because it gets into all the gaps in small items like electrical goods.
Ultra-violet lamps are also being handed out to pawn brokers in the county so they can also scan for marked property.