Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Different types of USB switch-type sensors used for keywords-based detection: (a) hand switch-click (mouse button switch) with a Swifty USB switch interface; (b) pal pad flat switch; (c) ribbon switch; (d) wobble switch; (e) foot switch; (f) sip/puff breeze switch with headset.
