New printers will be marked with a sticker with the text print.du.se as well as the number of the printer.
To be able to print, you need to have credit. Log in to print.du.se to buy credit with a bank card or Swish. From then on, print from print.du.se. If you have a credit balance, this will be automatically transferred to the new system.
A quick guide is also available at each printer.