e/BAT keyboard

Information
has gloss	eng: A BAT keyboard is a one-handed keyboard consisting of a base, on which the hand rests, and seven keys. Through pressing combinations of keys, one can attain the same functions as a regular keyboard.
lexicalization	eng: BAT keyboard
instance of	(noun) device consisting of a set of keys on a piano or organ or typewriter or typesetting machine or computer or the like keyboard