If you read carefully you will see my answer to the WWII stuff was prefixed with, guess what, yes ... WWIIDigital currency during WW2?
You got to be having a larf'!
Why didn't Germany think of that and just print a lot more UK counterfeit currency, digitally?
Why didn't Germany just "mark up accounts of recipients, digitally"?
No-one would have been able to discern real from counterfeit.
Why did the UK withdraw all B&W notes above £5?
Why did they change the colour of 10/ and £1 notes?
I guess you're stumped for an answer.
But hey, feel free to conflate anything that doesn't suit your own warped narrative.
Stumped for an answer? Yes, of course.
Away with you, you troll!