"They're all saved in my phone." One of the calls he made was to his 14-year-old son Connor, who was on a school fieldtrip to Washington. D.C. Connor had asked his dad to call at a prearranged ...

by ripping the mainboard out of an old phone and adding the ports and other features necessary to use it like a single-board computer. Citronics is kicking things off by offering a development kit ...