[ Batteries, electric; Blank USB cards; Blank USB flash drives; Cell phones; Cellular phone usage detection system comprising a camera and a mobile phone signal receiving device; Clear protective covers specially adapted for personal electronic devices, namely, cell phones, personal tablet computers and personal digital assistants; ] Data cables; Earphones and headphones; [ Lenses for photographic apparatus; Magnetically encoded identification bracelets; Monopods for handheld digital electron...