A method includes: displaying, by a second device, prompt information, where the prompt information is used to inform a user that a task executed on a first device may be handed off to the second device for execution; receiving, by the second device, a first operation of the user, and collecting a fingerprint used when the user performs the first operation, where the first operation is used to request execution of the task on the second device; acquiring, by the second device, first fingerprint information and second fingerprint information by using the first device; calculating, by the second device according to the fingerprint used when the user performs the first operation and the first fingerprint information, third fingerprint information; and executing, by the second device, the task when the third fingerprint information matches the second fingerprint information.