No Head Movement - Tongue/Lips/Facial Gestures Only, Head Movement Only, No Arm Movement with some Finger Dexterity, Arm Movement with Limited Finger Dexterity, C1-C3 Quadriplegia, C4 Quadriplegia, C5 Quadriplegia, C6-C7 Quadriplegia, ALS - Lou Gehrig's Disease, Cerebral Palsy, Muscular Dystrophy or SMA, Multiple Sclerosis, Paraplegia, Limited Speech or Nonvocal, Stroke, Unable to Walk - Wheelchair User, Brachial Plexus Injury, Limited Hearing or Deaf, Limited Vision or Blind, Arthritis, RSI, Tendinitis, Elderly, Not Disabled, Temporarily Able-Bodied