3 ms·

Please correct me if I’m missing something. You’re describing a map where the key is a note and the value is, a linked list of banks? I’m not clear what the poi

by dgfitz 4y ago

Please correct me if I’m missing something. You’re describing a map where the key is a note and the value is, a linked list of banks? I’m not clear what the point is that you’re trying to make.

viraptor 4y ago
I believe what they're saying is - we have the capability to track every physical banknote as it leaves/enters the bank and attach it to the person who deposits/withdraws it. There may be extra steps in between, but if you're tracking a transaction / relationship type which happens twice or more, you can expect that the person on the record is the person you're after or can point you at them. But I don't know why they expect FBI to actually have it implemented. The system would have to be so widespread/common that we'd know if it existed. I mean, there's https://en.wikipedia.org/wiki/Currency_bill_tracking https://en.wikipedia.org/wiki/Currency_bill_tracking but that's for hobbyists. Otherwise banks may check for duplicate numbers... but I can't find any mention of more widespread tracking.
- freejazz 4y ago
  It also assumes that money doesn't change hands multiple times before going back into another bank.
  - ilyt 4y ago
    You could probably infer a lot without knowing who traded it to who. If say * person A gets 100 banknotes from the bank, gives 50 to person B, * person B pays 25 to person C and 5 back to bank (say, taxes) * person C pays 5 of them to the bank You can infer with some probability who traded what to who.
    - freejazz 4y ago
      Not really. A billion other things also could have happened, they just didn't. Also, when was the last time you deposited cash?
      - kelnos 4y ago
        Many people don't, but businesses deposit excess cash daily. Certainly, though, those same businesses keep a lot of cash in order to give change to other customers. But that cash will still likely end up back at a bank before too long.
        freejazz 4y ago
        If it only goes to banks when businesses deposit it, you can't tell anything about the intermediary users
        ilyt 4y ago
        Just because you can't imagine way of tracking it doesn't mean it isn't possible.
        freejazz 4y ago
        Offer one...
  - kelnos 4y ago
    The person who made this point addressed this already: > banknotes are only in circulation for one or two exchanges before coming back to a bank No, you don't get the 100% whole picture, but you can mine a ton out of data points like "note 38573204 was given to John Doe via ATM on 2023-01-10, and returned to bank by Jane Smith (owner of ABC Widgets) on 2023-01-14".
    - freejazz 4y ago
      Not really. Coincidentally, there is no database of that. Hmm, wonder why!

by dgfitz 4y ago

viraptor 4y ago

I believe what they're saying is - we have the capability to track every physical banknote as it leaves/enters the bank and attach it to the person who deposits/withdraws it. There may be extra steps in between, but if you're tracking a transaction / relationship type which happens twice or more, you can expect that the person on the record is the person you're after or can point you at them. But I don't know why they expect FBI to actually have it implemented. The system would have to be so widespread/common that we'd know if it existed. I mean, there's https://en.wikipedia.org/wiki/Currency_bill_tracking https://en.wikipedia.org/wiki/Currency_bill_tracking but that's for hobbyists. Otherwise banks may check for duplicate numbers... but I can't find any mention of more widespread tracking.

freejazz 4y ago
It also assumes that money doesn't change hands multiple times before going back into another bank.
- ilyt 4y ago
  You could probably infer a lot without knowing who traded it to who. If say * person A gets 100 banknotes from the bank, gives 50 to person B, * person B pays 25 to person C and 5 back to bank (say, taxes) * person C pays 5 of them to the bank You can infer with some probability who traded what to who.
  - freejazz 4y ago
    Not really. A billion other things also could have happened, they just didn't. Also, when was the last time you deposited cash?
    - kelnos 4y ago
      Many people don't, but businesses deposit excess cash daily. Certainly, though, those same businesses keep a lot of cash in order to give change to other customers. But that cash will still likely end up back at a bank before too long.
      - freejazz 4y ago
        If it only goes to banks when businesses deposit it, you can't tell anything about the intermediary users
        ilyt 4y ago
        Just because you can't imagine way of tracking it doesn't mean it isn't possible.
        freejazz 4y ago
        Offer one...
- kelnos 4y ago
  The person who made this point addressed this already: > banknotes are only in circulation for one or two exchanges before coming back to a bank No, you don't get the 100% whole picture, but you can mine a ton out of data points like "note 38573204 was given to John Doe via ATM on 2023-01-10, and returned to bank by Jane Smith (owner of ABC Widgets) on 2023-01-14".
  - freejazz 4y ago
    Not really. Coincidentally, there is no database of that. Hmm, wonder why!