[cynwoody]

The above all applies to the IR spectrum most often used in cameras. Other parts of the spectrum might work somewhat different.

Millimeter wave camera sees through plywood (sort of):

https://www.youtube.com/watch?v=IFczV8dSJ2E

Maybe a more advanced version might work on the Wells Fargo building ... where are the guards? where is the money? where is the twit with the PA microphone? Gotta take her out first! Oceans 14?

[Sherman Logan]

Those aren’t IR. I looked into them some years ago. Looks like they’ve advanced quite a bit.

They’re an active sensor, emitting radiation and then scanning what bounces back, unlike IR or visible light cameras, which as passive.

I think these operate in the part of the electromagnetic spectrum above microwaves but below IR.

Interesting tech, but looks like it needs a lot more work to be practical for much.