It's not 3 bottles, it's 3.4 oz or 100 ml.

It’s as many bottles sized 100ml or less that you can fit in a 1 liter bag.

Yeah, but arent you allowed to exit and re-enter security as many times as you like as long as you have a valid ticket?

Then you hide them somewhere inside and go back out and in again

> The security used something I would describe as out of an Iron Man film, they were zooming around a translucent 3D view of my backpack. (It was on an LCD display instead of hovering midair, but I was still impressed.

I just flew with two laptops in my backpack which I didn't have to take out for the first time (haven't flown in a while), with a custom PCB with a couple of vivaldi antennas sandwiched in between the laptops.

It was a real trip watching them view the three PCBs as a single stack, then automatically separate them out, and rotate them individually in 3D. The scanner threw some kind of warning and the operator asked me what the custom PCB was, so I had to explain to them it was a ground penetrating radar (that didn't go over well; I had to check the bag)

Tel Aviv has allowing this for quite some time (10 years?). I guess they update their security devices as soon as new technology becomes available.

They don't advertise it, I found out by accident, trying to empty my water bottle by drinking when a security person told me to just put it together with the rest of my stuff. I had no idea that was a thing and was pretty confused.

You can do realtime 3D flythroughs on CT scans with open source viewers. If you've ever had one, get your DICOM data set and enjoy living in the future.

I've seen this too in the US, the newer machines let them spin the scan around in 3D space and must make it much easier to tell if something needs inspection or not