I don't know but I just was thinking of this one randomly as I was looking at my wallet. Now I am an American so I rarely if ever carry any cash, but my wallet still has a cash slot, and I remembered when I was traveling in Germany, the Euros barely fit in my wallet because well, "this is an American wallet" and the size of the bills are different. (And also, damn German economy for having a lot of cash only places, in London, I could just use my card everywhere (and Apple Pay as a matter of fact) like I do in the US). I know that the slots for the bills are also even inherently different on the cash register itself around the world, despite being manufactured by the same companies.
Yet credit cards are universal, and fit in any wallet, and fit in any card reader in and around the world. The numbers are generally always in the same spot (for the most part), the chip is in the same spot, the magnetic stripe on the back is in the same spot, as well as the signature line. A US credit card fits in a British chip reader just fine, and a German guy traveling has no qualms or issues about inserting their card at a Walmart in Phoenix, AZ. The chip reads, it works, voila, done and done.
I am not saying the whole world should use the same currency, but why is it that we can standardize on how credit cards should look and function, but cash comes in many colors, shapes, sizes, and of coins are an entirely different matter altogether. Of course I know that this could be that cash is customized by the government whereas cards are all a private entity, etc.
Yet credit cards are universal, and fit in any wallet, and fit in any card reader in and around the world. The numbers are generally always in the same spot (for the most part), the chip is in the same spot, the magnetic stripe on the back is in the same spot, as well as the signature line. A US credit card fits in a British chip reader just fine, and a German guy traveling has no qualms or issues about inserting their card at a Walmart in Phoenix, AZ. The chip reads, it works, voila, done and done.
I am not saying the whole world should use the same currency, but why is it that we can standardize on how credit cards should look and function, but cash comes in many colors, shapes, sizes, and of coins are an entirely different matter altogether. Of course I know that this could be that cash is customized by the government whereas cards are all a private entity, etc.