I have a few pALS right now who are head tracking or thinking about head tracking and prefer switch to dwell selection.  What are some good options for switch selection? We would need to activate a switch by some sort of facial movement (puffing cheek, dropping jaw, moving lips, etc.) They have relatively if not completely preserved facial movement at this time.  Any suggestions for switches and mounts?  We had a patient in the Bay Area once that wore a headset with a microlight and activated by puffing up his cheeks.  One of the patients likes the idea of dropping his chin to activate a switch.  I