[TachyonicBytes]

With quantum tokens, law enforcement have to crack your physical devices, so they at least have to good-old-fashion bug your devices. With classical schemes, they can intercept on the way.

I wouldn't say that current side-channels, most certainly enabled by hardware, not software, are easier to audit.

[Vecr]

I don't think that's true. If you're paranoid you can build a very simple and easy to audit device that lets packets through exactly every x microseconds, with a short buffer to prevent timing via dropouts.

Works fine for digital, doesn't work for quantum stuff.

[foolfoolz]

“lawful intercept” can be mandated to be built into anything

[thrw42A8N]

Yes, but it's much easier to see it in hardware than in software.