Money is trackable. How do you think that they found Saddam Hussein? He was hiding in hole with the money. Large sums of money can be detected from a satellite. There's an embedded strip that can be read. Maybe a lead lined box would prevent the detection. Need to research it... precious metals is better than paper/coins but also detectable. A stock of needed commodities would probably be more valuable if the system goes down. E.G....TP