主权项 |
1. A first mobile device, comprising:
a storage device storing at least one password, wherein each said password is associated with an access period or an access count; a display; and a processor coupled to the storage device and the display, deleting a said password when the access period or the access count associated with the password expires, encoding a said password in an image and controlling the display to display the image, receiving a pairing request comprising a password from a second mobile device, accepting the pairing request when the password of the pairing request matches any said password stored in the storage device, and rejecting the pairing request when the password of the pairing request does not match any said password stored in the storage device. |