One thing to remember about the modern world is that nothing online is ever secure. M&S and Jaguar taught us that. Edward Snowden taught us that. Every week, it seems, some giant corporation sees its system collapse at the touch of a button in an attic.
The government this week opened a consultation on its plan for nationwide facial recognition and surveillance. You would need only put your face outdoors and walk down the street and authorities will know and record it. Of course we will be assured that all will be kept secure. It will not. Cash or conspiracy will find it out and it will leak.