Gold is not a currency, not anymore. It was, for a long time, but sadly everything comes to an end, it's inconciavable in the 21 centuty to use technology from the 5 millenia BC. It wont happen dude.
Then why are central banks, nevertheless, hoarding it, and the US (claimed to be most technologically developed) has gold reserves that
substantially exceed those of other countries following its lead, which also happen to be highly developed (such as France, Italy, Germany)?