Patent ID: 8381274

Claim:
A security system comprising: a touch sensitive display; a storage storing a predetermined password and a plurality of modules; and a processor executing the plurality of modules; wherein the plurality of modules comprises instructions executable by the processor to: display a security access interface on the display unit, wherein the security access interface comprises a graphical region, the graphical region is filled with a plurality of colors, the graphical region is divided into a circular first color region, an annular second color region concentric with the first color region, an annular third color region concentric with the first color region, the second and third color regions being rotatable around the first color region; select at least one color filled in the graphical region according to instructions from the touch sensitive display; record a sequence of selecting at least one color in the graphical region; receive user instructions from the touch sensitive display to rotate the second and/or the third color region; record at least one rotation angle and at least one rotation direction according to rotation of the second and/or the third color region; generate an input password according to the sequence of selecting the at least one color, the at least one recorded rotation angle, and the at least one recorded rotation direction; determine whether the input password matches the predetermined password; and grant access if the input password matches the predetermined password.