Beyond welcoming shoppers, the job was designed to provide an aura of safety to the front of the store as well as extra protection against shoplifters.
When I asked the clerk about why their was a camera overhead, directly looking at the machine, she informed me it was for the protection of the store and customers.
More important, as Judge Callahan explained, the Ninth Circuit had previously rejected the notion that computers should receive more protection under the Fourth Amendment simply because of how much data they store.
The TSA has defended the scanners, promoting their built-in privacy protection measures including blurring of faces and making it impossible for the machines to store or send the images.