The invention relates to a stamper which comprises a stamper body, a handle portion, a body cavity, a drive device and a main board. The lower end of the handle portion is in a column barrel shape, and a scanning device and a power source are arranged in the handle portion. The body cavity is in a barrel shape, and the upper end of the body cavity is connected to a lower end opening of a column ofthe handle portion. The stamper body is arranged in the body cavity and can ascend and descend in a reciprocating manner relative to the body cavity. In the initial state, the lower end face of the stamper body is on the inner side of a lower end opening of the body cavity. The drive device and the main board are fixed to the lower portion of the handle portion. The drive device can act on the stamper body and at least enables the stamper body to move downwards relative to the body cavity. The scanning device and the drive device are connected with the power source and the main board. The main board can analyze and process scanning information and control the drive device to act. In the scheme, the stamper body is arranged in the body cavity and can do linear reciprocating motion relativeto the body cavity, fingerprints are scanned, the main board processes fingerprint information, and therefore whether the drive device is started or not can be judged. According to the stamper, the behavior of using the stamper can be limited, the situation that the stamper is used freely is reduced, and the company operational risk is reduced.