Notesai is a variant of Lomak that has been developed for people with poor head control.
The principle difference between Lomak and Notesai is that for the Notesai keyboard, the alphabetical keys are spaced further apart to accommodate tremors and involuntary head movement. Every alternate key has been made redundant such that there are only 13 letter keys. Common and uncommon keys have been paired together with the secondary letter (the less frequency used key) operated by an "alpha" shift key.