I've had any "hands on" experience with the Tap, but it looks very cool, like a modern version of Douglas Engelbart's and Valerie Landau's HandWriter glove!
I asked Valerie Landau about it (wondering if it was her company), but she hadn't heard of it before.
They have an iOS, Android and Unity3D SDK that appeared on github recently, so you can look at the code to see how it works:
Does this look legit? Has anybody tried it?
If it works as advertised, I'd love to develop TapPieMenus that you can use in VR, mobile, desktop computers, and everywhere else!
I'm excited about the possibility of creating easy to use, fast and reliable pie menus for Tap that users can fully customize, and use with one hand in the same way that Douglass Engelbart described you could do with two hands using a mouse and a chorded keyboard:
>"Well, when you're doing things with the mouse, you can be in parallel, doing things that take character input. And then the system we had, it actually gave you commands with characters, too. Like you had a D and a W, and it says, "you want to delete a word", and pick on which word, and click, it goes. M W would be move a word. Click on this one, click on that one, that one could move over there. Replace character, replace word, transpose words. All those things you could do with your left hand giving commands, and right hand doing it."
It would be cool to have some tactile feedback, so the tutorial could train you to type out letters by vibrating your fingers with a piezo buzzer or something, and maybe it could even secretly spell out silent invisible messages to you while you were wearing it! And you could feel a different silent finger "ring tone" depending on who was calling you, then tap to answer to discard the call, or stroke with a TapPieMenu to send a canned reply.