Lincmaster "Thief Stoppers" are just what the name implies - They Prevent the Event - stopping the theft before it happens. The Lincmaster principle: Anti-Theft, Not After Theft. All Lincmaster "Thief Stoppers" are designed as anti-theft devices, as prevention is seen as better than a cure. They do not rely upon after-theft tracking, tracing or recovery systems. They do not employ electric, electronic or radio elements. The main aim is to secure the assets at source and to provide the most effective but least costing method of theft prevention. With over 20,000 anti-theft devices currently in use, many users are now claiming a 100% success in defeating thieves.