Equipment stolen or mislaid is a constant cause for heartburn in large organisations. Newmark Tech nology, a UK-based security company, has now designed a radio tagging system to help companies keep track of computers and other valuable equipment. The system automatically tracks the tagged assets at distances up to 100 metres, monitors and controls access to the controlled area and can also monitor an individual's authority to remove property, allowing staff to be alerted if the attempt is unauthorised.