Abstract: A mobile terminal unlock method is provided. The method includes: obtaining a trigger signal for unlock, and generating a first password according to the trigger signal; generating a corresponding unlock signal according to a preset correspondence between the unlock signal and the first password and with reference to the first password, and sending the corresponding unlock signal; obtaining an unlock password that is obtained by means of parsing by a user according to the unlock signal; matching the unlock password with the first password; determining whether the unlock password is consistent with the first password; and if a determining result is yes, unlocking a password lock; or if a determining result is no, obtaining a trigger signal for unlock again.

Abstract: A method for providing application service is provided. The method discloses that a user is authenticated according to a received application service acquisition request from a user mobile phone, and when the user authentication is passed, the application service acquisition request is sent to an application server, so that the application server provides an application service to the user mobile phone according to the application service acquisition request. The application server does not need to authenticate the user mobile phone by performing an authentication operation on the user mobile phone through a wireless application protocol gateway, thus being capable of reducing the workload of the application server.

Abstract: A method for authenticating the identity of a handset user in a cloud-computing environment is provided. The method includes: obtaining, a login account and a password from the user; judging whether the login account and the password are correct; if the login account or the password is incorrect, refusing the user to access an operating system of the handset; if the login account and the password are correct, sending the login account and the password to a cloud server, wherein the login account and the password correspond to a face sample image library of the user stored on the cloud server; acquiring an input face image of the user; sending the input face image to the cloud server; authenticating, by the cloud server, the identity of the user according to the login account, the password and the input face image.

Abstract: A method for authenticating the identity of a handset user is provided. The method includes: obtaining, a login account and a password from the user; judging whether the login account and the password are correct; if the login account or the password is incorrect, refusing the user to access an operating system of the handset; if the login account and the password are correct, sending the login account and the password to a cloud server, wherein the login account and the password correspond to a face sample image library of the user stored on the cloud server; acquiring an input face image of the user; sending the input face image to the cloud server; authenticating, by the cloud server, the identity of the user according to the login account, the password and the input face image.