I paid a bill and the company I paid made a photocopy of my check and attached it to the invoice and stuck it in a file cabinet. Is that legal?
International Law Attorney
Generally speaking, I cannot imagine why it would be illegal to keep a record of payments made by photocopying the checks. You of course have the option of paying by cash.
Chapter 7 Bankruptcy Attorney
In general this is just their method of doing business and keeping records, or so it sounds. Unless your state has some law preventing a person to whom you send a check for payment from keeping a copy there may be nothing wrong with their practice.
I am not licensed to practice law in SD, only FL so you will need to ask a SD-licensed lawyer this question.