Abstract: A method for controlling an electronic device by an input device, and an input device is disclosed. The method includes: controlling, by the input device, an electronic device by using a touch apparatus when the input device detects that the input device is in contact with the touch apparatus of the electronic device; and when the input device detects that the input device is in contact with an object surface beyond the touch apparatus of the electronic device, detecting, by the input device, a motion of the input device on the object surface, and sending information about the motion to the electronic device, to control the electronic device.

Abstract: A dynamic recognition method includes, when the terminal device detects that the user is in a first distance range, obtaining, by the terminal device, first feature information of the user. The method further includes performing first identity authentication on the first feature information of the user, where the first feature information includes facial feature information, voice feature information, or behavioral feature information. The method further includes increasing, by the terminal device, a level of a default threshold of second identity authentication when the first identity authentication succeeds. The method further includes, when the terminal device detects that the user is in a second distance range, obtaining, by the terminal device, second feature information of the user, and performing second identity authentication on the second feature information of the user based on the default threshold whose level is increased.

Abstract: A method for controlling an electronic device by an input device, and an input device is disclosed. The method includes: controlling, by the input device, an electronic device by using a touch apparatus when the input device detects that the input device is in contact with the touch apparatus of the electronic device; and when the input device detects that the input device is in contact with an object surface beyond the touch apparatus of the electronic device, detecting, by the input device, a motion of the input device on the object surface, and sending information about the motion to the electronic device, to control the electronic device.