Agreed, I'd kill for a modern version of the TouchStream LP. Comfiest and quietest keyboard I've ever used, with no elbow strain from reaching for a mouse/trackpad. They even had a product that could replace a MacBook keyboard. [1]

That being said, the company was acquired by Apple and turned into the iPhone and iPod Touch. The keyboards were effectively museum pieces at that point. I wonder if the patent situation would allow for third parties to revisit the design. It'd be interesting to see what could be done with by borrowing ideas from the programmable keyboard community and mobile touch hardware.

[1] https://en.wikipedia.org/wiki/FingerWorks