Split spacebars existed long before this model. The Kinesis Freestyle ( http://www.kinesis-ergo.com/freestyle.htm http://www.kinesis-ergo.com/freestyle.htm ) ha

Split spacebars existed long before this model. The Kinesis Freestyle ( http://www.kinesis-ergo.com/freestyle.htm http://www.kinesis-ergo.com/freestyle.htm ) had them since at most 2008. EDIT: I may have misinterpreted you; the split spacebar I'm talking about is split between the two halves of the keyboard and can move completely independently of the other half.