Instructions for use: 1. Infrared automatic sensing. When the user's hand appears in the sensing area, the product will release the internal touch-free pen and fall into the user's hand. 2. After the user has used it, the pen is put into the product from the entrance for alcohol disinfection. After disinfection, the surface is stained with alcohol, ready to be used by users next time. 3. When the user gets the pen, he can disinfect his hands with alcohol on the surface. 4. Surface alcohol is also used as evidence of detoxification of non-contact pens, enhancing the user's sense of security.