[colanderman]

That certainly won't work for my aluminum water bottle. Granted, neither do X-rays, and yet I've never had it even questioned going through security.

[goodcanadian]

Yes, I was assuming a typical disposable transparent plastic or glass bottle. I have not seen the machine in question, so I am guessing, but it would be very easy to implement and cover the majority of cases.

[rwmj]

I think we're assuming here that this machine isn't merely security theatre.