Safe lock input interface device and safe lock unlocking method

The invention provides a safe lock input interface device. The device comprises a module for displaying a plurality of draggable geometric patterns, and a plurality of cipher bit modules, wherein the geometric patterns carry key information and can display characteristics corresponding to the key information; and the plurality of cipher bit modules are used for unlocking when the geometric patterns are moved to a cipher bit and matched with the cipher bit. The invention also provides a corresponding safe lock unlocking method. By utilizing the safe lock input interface device and the unlocking method, the fun of a safe lock input mode is increased, users can obtain vivid input experience, and the possibility that a cipher is stolen by keyboard operation record type virus is reduced because operation on the keyboard is not adopted.