The TypeMatrix is an ergonomic, compact keyboard with keys arranged in a matrix pattern instead of the usual scattered pattern which is a legacy of the early mechanical typewriters.
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This keyboard has a small footprint, only 324 by 133 mm. This not only leaves more room on the desk, but also and mainly reduces the lateral travel distance of the right hand to grabe the mouse. It still offers a good numeric keypad thanks to the matrix layout.
Pro Ergonomic keyboard
The matrix layout reduces the travel distance of fingers. The keys feature membrane switches with double-scissor substrate, they are quite comfortable and very quiet.
Numerous skins are available, making it simple to keep the keyboard clean and even quieter. They also allow for multiple layouts.
Pro Bépo and dvorak layouts
Those are not easy to find, especially the first one. While they don't necessarily increase the typing speed, they greatly reduce the travel distance of the fingers, and have a much better distribution of the keys than regular azerty or qwerty layouts.
Pro Matrix Architecture - Straight vertical key columns increase typing accuracy.
After using this keyboard to learn touch typing after 30+ years of using computers I am amazed that more people do not use a matrix or ortho-linear layout. The offset of keys on a regular keyboard was created because of mechanical linkages on the original typewriters.
Con Unusual layout
The central position of the Enter and Backspace keys, on top of the matrix arrangement, requires some getting used to.