Let the hive mind of Engadget get that for you.
"We need a digital camera that can be switched on and fire off that first shot fast. It's not a commonly tracked statistic on any review site, and nobody seems to have this information for every camera. We were hoping other readers could inform us as to what small digital cameras can fire off their first pics in under a second (ideally under half a second). It needs to be small, but mostly, just really quick in operation. Thanks!"
In addition to the cectw100 by using: http://www.cectw100.org
and the first generation of SMS Technologies M300 Watch (sibling to the M500) at http;//www.m300.org
Hope those links help you with your interest in the devices that fall under this SWEET category of wrist communicators. :)
It's like Dick Tracy, Knight Rider, Inspector Gadget, James Bond, and all the other cool movie technology gadgets have come to life!! Well, I guess they have! :)