Why do you have to take off your shoes and bare feet when you enter the detention center?

It is absolutely forbidden to bring in your shoes with hard metal plastic and shoelaces that can cause personal injury. Some prisoners' shoes are evidence to be preserved, which is also a health need. Wearing sports shoes without changing them will not taste much. Wearing slippers barefoot can reduce the odor, which is not conducive to exercise, and can prevent escape and attack others. At the same time, it is also a psychological shock to prisoners, and they know that they have become prisoners.