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> - you take that cash immediately to a vending machine or supermarket auto-checkout that takes notes. The machine scans all notes it ingests and can match them
by seszett 3y ago
> - you take that cash immediately to a vending machine or supermarket auto-checkout that takes notes. The machine scans all notes it ingests and can match them to timings and purchase details.
I can tell you they don't do that, at least for the systems I know in Europe. And for manual systems obviously the cashier doesn't record serials and match them to transactions.
- nonrandomstring 3y agoI'd love to hear more about what you know about the systems you've examined or designed. PM me at cybershow.uk and we might do an episode and bring in some other engineers too. Specifically can you prove (or give compelling anecdotes why) the linear CCD array used to determine the legitimacy of the note cannot, on internet connected machines, retain and store that scan? I know that's a tall order, because I'm asking a negative.
- seszett 3y agoI haven't designed such a system and as you say I can't really prove anything, but the embedded software I worked on just didn't record anything like that. Of course one can always imagine a secret government firmware or whatever, it's just highly unlikely IMO. The most obvious proof I'd say is that there is no law mandating this, so nobody is going to bother doing it just for fun.
- pzo 3y agoHow about money counting machines? Medium and bigger shops probably have those and if not they probably at least every few days bring cash to bank to deposit on their account. Remember supposedly most printers were printing some semi invisible serial codes - for tracking whistleblowers and leaks. Probably cannot easily prove that ATM or money counter machines manufactures are not doing something similar.
- multjoy 3y agoMoney counting machines do it by weight. They're certainly not scanning and recording the serial numbers.