Text-only as opposed to encrypted text and images.

As far as I've been able to make out, document images are generated on the server and sent to the terminals as PostScript files. I've noticed at satellite locations the receipt printers hesitate for a few seconds before printing the barcode at the bottom, which tells me that either 1) it's taking some time to transmit the barcode image over the internet or 2) the server is taking its sweet time cataloguing the transaction in the document archive. Either way, I've gotten complaints about it from the users.