Airport security is a hassle. -- but necessary for public safety.
There ‘re two types of scanners that have been used in airports:
For both scanners -- as far as radiation risk is concerned -- you can rest easy. The amount of radiation exposure from one backscatter x-ray security scan is very small: less than a tenth of a micro seevert. That’s less radiation than you get from eating a banana. The radiation from a regular Chest x-ray is 2000 times that.
Radiation exposure aside—what about privacy concerns? The images from these scanners can be so detailed, they could be embarrassing. Congress mandated these machines use special software to make the images more generic and cartoon like- and less revealing. The company making the backscatter machines didn’t meet the software deadline so their contract was not renewed. TSA reports say all backscatter x-ray machines have been removed. The millimeter wave machines in airports do have this image-altering software, so your privacy is protected---Your own mother wouldn’t recognize you.