Felix Morsbach

And you kind of...

already recognize them, right?

So I guess everybody had this situation at one point.

So this turns out that we can also, there's other features besides our faces, which make us very much identifying.

And one promising one is the way we walk, what we would call gate recognition.

And this you can do perfectly fine with thermal cameras.

And so there's no trouble.

I have no trouble identifying you on a thermal imaging if I have a gate recognition system.

Yeah, LiDAR is even worse.

LiDAR is even worse, like in terms of privacy, let's say.

Yeah, exactly.

So seeing all these claims made from industry and also academia alike saying, yeah, I have this new cool system and this is privacy preserving and I can do all this nice shit, but without actually having the privacy, infringing any kind of privacy.

And we know that for certain examples, this is definitely not true.

So we said, okay, let's maybe test whether this holds for all the things.

So we built a small setup, did a study where we invited a bunch of people and recorded them with a very vast array of sensors.

So there were thermal cameras, radar, depth cameras, LiDAR, and all the things that you can think of.

And also one of them would be Wi-Fi.

And as you rightfully said, so like Wi-Fi, what does this really mean, like Wi-Fi sensing?

And it turns out I can identify you based on how your body interacts with the Wi-Fi signal.

What?