I've only ever seen mmWave full body scanners, TSA began phasing out backscatter X-rays in 2012 [1] and according to this [2] backscatter X-ray is no longer use

I've only ever seen mmWave full body scanners, TSA began phasing out backscatter X-rays in 2012 [1] and according to this [2] backscatter X-ray is no longer used in US airports. Maybe different in other countries, I don't know. mmWave is radio frequency not X-ray and similar frequencies are used in 5G. [1] https://www.propublica.org/article/tsa-removes-x-ray-body-scanners-from-major-airports https://www.propublica.org/article/tsa-removes-x-ray-body-sc... [2] https://www.lancsindustries.com/blog/what-you-need-to-know-about-backscatter-x-rays-and-safety/ https://www.lancsindustries.com/blog/what-you-need-to-know-a...