The idea of certificate of bullion gold ownership

Many years looked the same in this aspect - nothing has changed since the times of kings and queens reigning and declaring wars to another kingdoms. There already were banks at that times, that is for sure. And what was the main strategy of keeping the resources? In form of precious ores I a strongbox of course! How does it look now? It used to look exactly the same way till not long ago. Just a month back, a company dealing with issuing bullion bars of gold and silver came up with an idea of issuing special gold or silver ownership certificates! Thanks to them, people wouldn"t need to carry the resources and precious stones with them in their pocket, they wouldn"t even have to store them at their places ! From now on the best and most comfortable way will be to get a bullion gold ownership certificate! A piece of paper stating that you are the owner of a given amount of bullion gold or silver. Any moment you may come to the right place in a bank and convert the ore into cash or the other way round. This idea is going to revolutionize the outlook of modern banking I suppose. Maybe it would be good to get one certificate by myself? Maybe in a couple of months the value will increase? There are many factors that should be taken under consideration!