Abstract: A dynamic unlocking method and an electronic apparatus using the same method are proposed. The method includes the following steps: recording an unlocking password combination including at least one unlocking password, where each unlocking password is characterized by a touch operation initiating from a specific icon and sliding toward a specific direction along a specific path by a specific distance; displaying an unlocking screen including a plurality of predetermined icons, where the predetermined icons are randomly arranged on the specific path; receiving at least one unlocking input performed on the predetermined icons; when the at least one received unlocking input completely matches the unlocking password combination, unlocking the electronic apparatus.

Abstract: A dynamic unlocking method and an electronic apparatus using the same method are proposed. The method includes the following steps: recording an unlocking password combination including at least one unlocking password, where each unlocking password is characterized by a touch operation initiating from a specific icon and sliding toward a specific direction along a specific path by a specific distance; displaying an unlocking screen including a plurality of predetermined icons, where the predetermined icons are randomly arranged on the specific path; receiving at least one unlocking input performed on the predetermined icons; when the at least one received unlocking input completely matches the unlocking password combination, unlocking the electronic apparatus.

Abstract: An electronic device capable of changing color of casing includes a casing, at least parts of the casing being made of transparent light-guiding material; a light emitting module for emitting light with N colors; a thermal sensor for sensing an environmental temperature; a storage unit for storing a look-up table, the look-up table recording N temperature ranges and the N colors, each of the N colors being corresponding to one of the N temperature ranges; and a control unit electrically connected to the light emitting module, the thermal sensor and the storage unit and used for comparing the environmental temperature with the N temperature ranges of the look-up table so as to control the light emitting module to emit light with one of the N colors.