The check used to buy Alaska ( source ) I recently read an FP article about the odd persistence of the cheque as a way to make payments. According to the author, even though cheques are slow and cumbersome, people are willing to live with these drawbacks because they like the ability to write messages in the memo field. Competing electronic payments options (in Canada at least) don't have the ability to write memos. Why do people still use checks? It's the memo field, apparently: https://t.co/ui0D0oTHEI pic.twitter.com/lkpEr9ZpEk — JP Koning (@jp_koning) June 21, 2017 As someone pointed out to me on Twitter, in the U.S. the cheque's memo field is more than just a place for writing personal reminders. According to the law in certain states , when you disagree with your creditor about how much is owed—say the contractor who is building your deck has spent too much on materials—by writing out a cheque for less than the agreed amount and including "paid in full" in...