> Why? Because when your opponent is a nation-state, you have a risk of being found via any other method. You can't drive anywhere because of license plate trackers. You can't show your face at the store thanks to facial recognition. You can't wear the same outfit without being picked up on CCTV's near your home base in the same outfit that you were wearing at the store.

If your threat is a nation-state, you'd also do well to avoid walking anywhere critical where you might be recorded, because of gait signature identification, but you seemed to have ignored that.