That's Nets, which controls the credit card payments in Denmark. However, it's at best a non-issue, because CC terminals can be put in "offline mode". So you c

That's Nets, which controls the credit card payments in Denmark. However, it's at best a non-issue, because CC terminals can be put in "offline mode". So you can still pay, but the transactions will first be synchronized when the line is back up. So until that, they're stored on the CC terminal itself. HOWEVER when running in offline mode, the shops will pay a larger transaction fee. Also there are some risks, e.g. the transactions are lost if something happens to the CC terminal, and furthermore, the shop cannot verify the card (which is automatically done when it's online). So unfortunately, many shops don't want to enable it.. However, the problem relies in Nets itself. They control the credit card systems in Denmark, have monopoly on "Dankort" which is the danish equivalent to Visa (actually you normally get a Visa/Dankort hybrid so that when you're abroad, you use the Visa-part of the card). Nets also controls NemID, which is the Danish authentication method for public stuff (one-time passwords). They have been criticized, but IT in Denmark is run by morons (sorry..).