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Fluorescent dye locking
When the thief cut your bike lock with conventional hydraulic tongs, because of the pressure of the lock is greater than the atmospheric pressure, the pigment added fluorescer of the lock is ejected out, attaching to the thief. At the same time, the bicycle alarm makes a noise. Thief in a mess, he may take two options, one is that the thief will give up stealing your bicycle, another case is the thief will escape with your bicycle. At the moment，you following the noise, colorful and fluorescent thief becomes the focus in the crowd.You can catch the thief at a stroke, getting back your bicycle.
Chengdu University of Technology