Embodiments of the present disclosure disclose an identity authentication method performed at a computing device, the method including: obtaining a sequence of finger gestures on a touchpad of the computing device from a user, wherein each finger gesture has an associated pressure type on the touchpad; generating a corresponding character string according to the sequence of finger gestures; comparing the character string with a verification code of a user account associated with an application program; in accordance with a determination that the character string matches the verification code, granting the user access to the user account associated with the application program; and in accordance with a determination that the character string does not match the verification code, denying the user access to the user account associated with the application program.