If people were to pay in a different currency such as seeds, how would it change the world we live in and what problems could there be?
Well, best to use something that does not sprout or get eaten by chickens.
Otherwise all sorts of stuff has been used for currency. However it needs to be something easily measured and it must last. Much early currency was metal, such as gold or silver coins. Since more and more trade is conducted over wires and radio signals, as long as it meets those basic requirements it should work. You store the metal or elegantly marked bricks in a bank vault and the owner is determined by who got the most recent email saying it is his or hers.