Not just ecomm. I remember the days when customers would read their credit card numbers over the phone for small businesses (e.g. pizza joints). You'd write it

Not just ecomm. I remember the days when customers would read their credit card numbers over the phone for small businesses (e.g. pizza joints). You'd write it down for processing later. The paper then gets disposed of at some point with the full credit card info and name written on them.