chorded keyboard replacement method
INSTRUCTIONS:
Place your fingers on the home keys of your keyboard (ASDF and JKL;), which will function as the ASETNIOP primary keys (ASET and NIOP). All other letters are obtained by pressing a chord (two primary keys at the same time) as indicated by the smaller circles and colored lines. To press the shift key, use one of your thumbs to press one of the bottom row keys (C, V, B, N, or M) on your keyboard.