Handheld mobile digital electronic devices comprising a full featured tablet computer, electronic book reader, digital audio and video player, electronic personal organizer, personal digital assistant, electronic calendar, and global positioning system (GPS) device, and capable of providing access to the Internet and sending, receiving, and storing messages and other data, with a special and unique focus on commerce by and related to children and their parents, including preloaded access to children's publications and sites and news and information feeds related to children's issues and unique filters related to children's content on the Internet; Computers, Laptop computers, Tablet computer, Mobile computers, Audio headphones, Communications headsets for use with communication radios, intercom systems, or other communications network transceivers, Ear buds, Ear phones, Earphones and headphones, Headphones, Headphones including attached lanyard, Music headphones, Personal headphones for sound transmitting apparatuses, Personal headphones for use with sound transmitting systems, Stereo headphones