Wednesday was the second day the conference was open to the public (the first two days were reserved for press and back-room meetings) but the bustle on the expo floor seemed bigger and louder than Tuesday's kick-off. Attendees rubbed elbows trying to get a peek at the newest health trackers, tablets and speakers — many of which, not surprisingly, won't be available for months.

Here's some of the more interesting gadgetry CES had to offer.