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I can see how it'd work. The x-ray scans the inside of the arms and generates a picture. Then a projector instantly displays the picture over the area the x-rays are scanning. I doubt you would like to do this too often though, considering the nurses always leave the room before you're x-rayed in the hospital ...

Awesome!

Looks cool, thanks for explaining Costre :)

Cant see much from video.

I don't think that's how it works, costre, seeing as how they have it on for an extended period of time in the midst of a small number of people at some sort of convention. (listen to background noise) Also, x-rays normally show bones and hard tissue, whereas this device is displaying the tissues directly under the skin, meaning that most likely it works on a frequency slightly lower than that need to penetrate the skin, so that it will show tissues that are a bit denser. Then, it automatically displays the data using an array of lasers. I don't see how the infra-red part of the device would fit in with your explanation, anyway. This certainly is an awesome video and looks like it will help medical students a ton! This may or may not be a good thing, however. For instance, what if these devices are installed everywhere in the next couple years and become as common as blood pressure measuring devices? Most nurses will rely on them too heavily, and if there happens to be a power failure, or if they quickly need to inject a chemical or draw blood, they'll be unable to locate the arteries properly. I see more positives coming out of this technology than negatives, though.

Ulf: Maybe you should post this one instead http://www.youtube.com/watch?v=vIsSDNgGOWY. Almost the same footage but *with* explanation.

thats so fricing cool

Some pulse reading machines (the ones you'd insert your finger in) are using infrared light to measure when there's light in the arteries because of the blood's property to absorb IR light. Also, if you'd take a picture of a person with a camera that's sensible to the infrared (or has an IR filter on top) you'd clearly see the veins and arteries beneath the person's skin.

Thanks OGrilla and kek, that clearifies it. I hope I understood it; this thing is working with IR, and has nothing to do with X-Rays, in fact it doesn't even work as an x-ray machine, it only displays subdermal tissues and bloodveins?

Since it only goes past the skin layers... What happens when you put it against clothing? ;) ;)