> Cash is an anonymous payment system which cannot be traced
Not really; bills are individually identifiable and can be tracked by either party to the transaction, and even if the payment medium isn't tracked, the transaction can even tracked by other means (e.g., cameras + facial recognition.)
It's only really untraceable if you assure privacy of the location of the transaction, and neither party to the transaction chooses to track it, and even then if the next party out on either side is tracking, a lot can be revealed.
So you need someone scanning notes, logging locations, watching for patterns to infringe on your privacy, this sounds like it's private except if you are under targeted surveillance.
Not really; bills are individually identifiable and can be tracked by either party to the transaction, and even if the payment medium isn't tracked, the transaction can even tracked by other means (e.g., cameras + facial recognition.)
It's only really untraceable if you assure privacy of the location of the transaction, and neither party to the transaction chooses to track it, and even then if the next party out on either side is tracking, a lot can be revealed.