Stumbling into BodyHackingCon on the last day

You walk into the BodyHackingCon on an early Sunday afternoon, and you are not sure if it's really still going on. You expect it to have a bigger, or at least flashier presence: shouldn't there be people with highly visible body modifications milling about? Instead, you see people in business casual whose name tags say "superintendent", and the hallways are plastered with signs for Texas School Boards convention. But you persist and walk around a corner, and then down a city-block-long corridor around another corner (that's Austin Convention Center for you), and you are finally rewarded by a hand-scrawled sign pointing towards an open door of a huge, warehouse-style expo room. But this is the last day of a 3-day convention, so naturally most of the vendors are gone.

Neosensory vest that is supposed to let you perceive words as vibrations on your skin

There is still a thing or two happening; at one of the booths a visitor is trying to pull together the edges of a peculiar-looking vest around his torso; it clearly is not going to happen, since the vest is 3-4 sizes too small. "I'm sorry. We are planning to have larger sizes in the future," says a vendor at the booth, even though the guy is merely average size. But apparently the vest does not need to close to work. It is studded with small metal circles that make up some kind of haptic language interface. That's only my guess based on what I could glean from the snippets of conversation. Because who needs to ask how it works when you can speculate?

"Whip. Angle," says the booth guy. "Whip. Angle." Then he turns a phone screen to the guy who's trying out the vest. There are two circles on it, and he asks the guy to pick one to tap on. Apparently the booth guy made the dots convey some kind of haptic stimulation (e.g. buzzing?) -- and asked the wearer to recognize the word encoded in it. He praises the wearer for answering correctly. "So you see, it's not just the length of the word," he says. I guess he was saying that the vest made it possible, with some minimal training, to distinguish the actual word pattern, not just a longer word from a shorter word?

A jacket with a ribcage headpiece? This would make a splash at a science fiction convention.

Then you look around some more, and even with most vendors gone and large patches of the expo hall square footage reverting to its post-convention beige bleakness, you still see something unusual. At another exhibitor's booth, flanking it on both sides, two women are lying on the tables, looking for all the world like wax statues. Their eyes are covered with something that could be a sleep mask or a VR headset. You glance at the vendor's name -- bio- or healing-something -- and think it's more likely to be a mask. By the way, the name matches a definite pattern: half of the exhibitors' names here have "bio", or "quantum", or something vaguely medical in a New Agey way. Which is fitting, given that half of them sell nothing more than nutrition drinks and supplements.

You stumble upon exhibits of clothes that wouldn't be out of place a goth or punk store, except they have patches with wires sticking out, like something that's placed on you right before a surgery. Some also light up. Many would make a stunning costume at a science fiction convention, if you could spawn off a third or fourth alter ego to explore your mild interest in costuming. Overall, this is the bodyhacking you could get behind -- the kind that stays entirely outside the body.

Most of those clothes are art projects. One dress claims to simulate dark matter: "Dark Matter inflates and deflates against your body to simulate the universe expanding against you, and the buzzing sculptural universal necklace, "Dark Energy", buzzes against your skin to simulate movement through the universe in time in accordance with events happening in VR". But you have read enough science fiction and imagined the vast cosmic space enough times that you know if you put on that dress (not that it's an option) the experience would fall very short of feeling at the center of the expanding universe.

A cape that goes over some sensor with wires that's placed on your chest, resembling uncannily of surgical preparations.

Some of the clothes have VR content associated with it accessible through your phone; and perhaps you could spend some interesting minutes with it, but just downloading the app would take some time, and the WiFi connection in this building is iffy, and the event is winding down and you are sure vendors are anxious to pack up and leave.

Finally on the way out you get a glimpse of a more radical kind of bodyhacking: a guy you pass in the hallway has small, but prominent devil's horns under the skin of his bald forehead.