Methods and apparatus for damaging hair follicles using a series of rapidly-delivered low-fluence pulses of coherent or incoherent light are disclosed herein. The interior of the cup-shaped phase change material may be filled with a thermal insulating material. The battery includes an anode, a cathode, and at least one polymer matrix electrolyte separator disposed between the anode and the cathode. The digital camera has a processor for processing a digital image data in accordance with one of a plurality of selective data forms, one of the data forms being suitable for a watermark, and another unsuitable. The various elements of the system, e.