The Kinesis keyboard alters the common keyboard design to reduce typing stress. The concave layout is adjusted for the different finger lengths, and the keys are placed in straight columns to minimize diagonal movement. Many common keys are moved from the weak little fingers to the stronger thumbs.(CTRL/ALT are on both sides. Backspace, Delete, Home, and End are on the left thumb. Space, Enter, Page-Up and Page-Down are on the right thumb.) Most other keys are left in the familiar QWERTY layout.