>It seems like the main defense to this is to not have cash.
Which has its own set of problems. Various mechanisms to hold and transfer large amounts of cash largely anonymously have already largely gone by the wayside (e.g. bearer bonds). Read some spy or financial novels for a few decades ago sometime.
Which has its own set of problems. Various mechanisms to hold and transfer large amounts of cash largely anonymously have already largely gone by the wayside (e.g. bearer bonds). Read some spy or financial novels for a few decades ago sometime.