A verification method, wherein the verification method comprises: detecting, by each of a device and a mobile terminal, that a respective local end is connected to a respective peer end by using a data cable; if the mobile terminal detects a second operation action that is performed by the user on a physical button of the mobile terminal, displaying, by the device, a first screen, wherein the first screen is used to prompt the user to enter a screen unlock password of the mobile terminal on the device, verifying, by the device, the screen unlock password of the mobile terminal that is entered by the user on the device, and after verification is successful, gaining, by the device, access to the data of the mobile terminal; wherein the step of displaying the first screen if the mobile terminal detects a second operation action that is performed by the user on a physical button of the mobile terminal comprises: displaying the first screen if the mobile terminal detects the second operation action that is performed by the user on the physical button of the mobile terminal, and the device detects a third operation action that is performed by the user on the device; wherein, the step of displaying the first screen if the mobile terminal detects the second operation action that is performed by the user on the physical button of the mobile terminal, and the device detects a third operation action that is performed by the user on the device comprises: receiving, at the mobile terminal, a request message that is sent by the device based on the third operation action that is performed by the user on the device; and sending, by the mobile terminal to the device, the screen unlock password information of the mobile terminal to the device according to the request message. detecting, by each of a device and a mobile terminal, that a respective local end is connected to a respective peer end by using a data cable; if the mobile terminal detects a second operation action that is performed by the user on a physical button of the mobile terminal, displaying, by the device, a first screen, wherein the first screen is used to prompt the user to enter a screen unlock password of the mobile terminal on the device, verifying, by the device, the screen unlock password of the mobile terminal that is entered by the user on the device, and after verification is successful, gaining, by the device, access to the data of the mobile terminal; wherein the step of displaying the first screen if the mobile terminal detects a second operation action that is performed by the user on a physical button of the mobile terminal comprises: displaying the first screen if the mobile terminal detects the second operation action that is performed by the user on the physical button of the mobile terminal, and the device detects a third operation action that is performed by the user on the device; wherein, the step of displaying the first screen if the mobile terminal detects the second operation action that is performed by the user on the physical button of the mobile terminal, and the device detects a third operation action that is performed by the user on the device comprises: receiving, at the mobile terminal, a request message that is sent by the device based on the third operation action that is performed by the user on the device; and sending, by the mobile terminal to the device, the screen unlock password information of the mobile terminal to the device according to the request message. displaying the first screen if the mobile terminal detects the second operation action that is performed by the user on the physical button of the mobile terminal, and the device detects a third operation action that is performed by the user on the device; wherein, the step of displaying the first screen if the mobile terminal detects the second operation action that is performed by the user on the physical button of the mobile terminal, and the device detects a third operation action that is performed by the user on the device comprises: receiving, at the mobile terminal, a request message that is sent by the device based on the third operation action that is performed by the user on the device; and sending, by the mobile terminal to the device, the screen unlock password information of the mobile terminal to the device according to the request message. receiving, at the mobile terminal, a request message that is sent by the device based on the third operation action that is performed by the user on the device; and sending, by the mobile terminal to the device, the screen unlock password information of the mobile terminal to the device according to the request message.