The hypothetical I'm imagining is that the trucks/trains going into a port go through something like a strip photography [0] x-ray machine, which doesn't need t

The hypothetical I'm imagining is that the trucks/trains going into a port go through something like a strip photography [0] x-ray machine, which doesn't need the vehicle to even stop at all. Some barcode/QR code on the side of the container connects to some manifest, and then a human (or AI?) can do a quick sanity check of "oh the manifest says this container is full of teddy bears but it sure looks like there's a car in there." Obviously if it were that easy then somebody would have done it already, but I don't immediately see why that definitely wouldn't work. My guess is either a fast x-ray machine is implausible, and/or simply matching the contents to a manifest wouldn't be enough of a deterrent to criminals. [0]: https://en.wikipedia.org/wiki/Strip_photography https://en.wikipedia.org/wiki/Strip_photography