As well as every keyboard ever to be made in the future by every manufacturer.
A velocity sensitive, optronic musical keyswitch.
If you're like me, you're sick and tired of those stupid little suction cup switches either wearing out or sucking every piece of bar crud around until they cease to function properly.
It may cost a little more but why the hell aren't keyboard manufacturers using optical switches instead?
Here's a simple design that adapts an off the shelf ready made optical interruption sensor to measure the velocity of a struck key by using software to determine the time from which the contact is first broken til when it is re-established on the downstroke.
This is childishly simple switching technology on which patents expired decades ago and it is bulletproof, smearproof and if it ever fouls up with dust bunnies, a simple vacuum cleaner can render it good as new again.
Here ya go boys. With my compliments.
I'm passing this on to every keyboard manufacturer out there tonight and you can all murder each other for the patents, if there are any to be had.
Like I said, it's a simple application of an existing technology that's over three decades old.
At the very least, start using this in your higher end machines.
Gary
http://wiring.org.co/learning/basics/opticalsensor.html