DingTalk M1C is a fingerprint recognition device. Its casing is designed to prevent dust from settling, so that it is easy to clean. The module that records the fingerprint is visually demarcated from the body of the device. By using optical technology that is also found in smartphones, it delivers a reliable performance. The surface of the top is chamfered at an angle of 15 degrees which relaxes the wrist when it is being used. To help manage cables, the case is constructed in a partly open manner.