A computer mouse includes a housing having hollow for receiving a finger of a user, a control module inside the housing for detecting signals and controlling transmissions of the signals, and a fingerprint scanning module coupled to the control module for detecting fingerprints and transmitting fingerprint signals to the control module. The fingerprint scanning module includes a fingerprint scanner positioned in the hollow of the housing. A side view of the hollow may be close loop shaped, such as D-shaped, or open loop shaped, such as C-shaped.