This Maltron keyboard Created by Lilian Malt and Stephen Hobday 1970s, It is an ergonomic keyboard designed “to prevent carpal tunnel syndrome”. Unfortunately, this keyboard is a bit pricey which cost you $490. The Cherry MX switches which are known to last 50 million key strokes per key are fixed in this keyboard. Cherry MX key switches activate HALF WAY thru the key stroke. This means that the user does not have to pound the keys into the base of the keyboard which they said that it can prevent RSI (repetitive stress injuries).
[via Tech Blog]