I saw this on CNN this morning. It did not look like there was any kind of resolution that would show what the image was - just a blob. The people looked like a blurry stay-puf marshmallow man and the "bomb" he was hiding under his shirt was just a black blob.

Even if it did work and they tried it in public in the US, how well would it go when they start outing undercover cops, federal marshals and people with valid CCW permits?