Hi, I am just a 6th grader but I think you need at least a little paper money/coins. I am not from Sweden, but for people that don't have credit cards(like myself), what are we going to do? I collect coins from around the world! I have three Swedish Krona and I want to collect more! In my personal opinion, Sweden should not ban all money. I have a big collection because I am Italian, French, American, Indian, and part Nepali. I love to collect money from all these countries! Don't ban cash, Sweden!