> Quote from: llama on July 18, 2010, 12:03:29 AM > This is a good start, but still not impermeable. > Quote > (for example, by refusing to propogate word of the transaction at the vending machine) I didn't say impermeable, I said good-enough. The loss in practice would be far lower than with credit cards. No, the vending machine talks to a big service provider (aka payment processor) that provides this service to many merchants. Think something like a credit card processor with a new job. They would have many well connected network nodes.
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