finger sliding, a head-mounted video display, a thing that makes it feel like you've got insects on your palm, and, of course, the old kissing machine. A few recent inventions have expanded the latter trend, giving us creative new ways of getting intimate with our machines. There's the tickle interface, for one, which beams images from a connected smartphone creating the illusion that the person on the other end is tickling your palm -- made all the more real by tactile vibration hooked up to the rear of the device. And then there's the older, oddly-named Sense-Roid, sort of a clunkier version of the Hug Shirt, which, among other things, lets you "hug yourself." Both are demonstrated in a pair of videos after the break. Whatever you do, don't miss the second one.