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; dedicated home computer screen for receipt and sending of messages and content related to children's issues; database management software in the field of children's issues, optical character recognition software, electronic mail and messaging software, mobile telephone software to enable the transmission of data to mobile telephones; database synchronization software, computer programs for accessing, browsing and searching online databases; cameras, videophones; computer game and electronic game programs; pre-recorded audio video discs featuring audio, audiovisual, musical, multimedia and video works in the field of children's issues; headphones; stereo headphones; in-ear headphones; audio speakers; audio speakers for home; digital music and/or video players; video cameras; bags and cases adapted or shaped to contain tablet computer devices; bags and cases adapted or shaped to contain MP3 players, hand held computers, tablet computers, personal digital assistants, global positioning system (GPS) devices, electronic organizers and electronic notepads