Building a keyboard isn’t a big project these days. Controller chips and boards are readily available, switches are easy to find, and a 3D printer can do a lot of what used to be the hard parts. But ...

When Bill Buxton worked at Xerox’s Palo Alto Research Center in the early 1990s, he examined the classic children’s homemade telephones: two cups connected by a taut string. He wondered why that same ...