Beyond the complexities of tipping etiquette across cultures, tipping in Denmark can just be physically difficult. So while in Spain it's very easy to leave a few Eurocents on the table if you've received exceptional service, it can actually be a challenge to tip in Denmark if you don't have any pocket change (which you won't). Some card readers at cafés and restaurants have begun offering an opportunity to tip by percentage, but often the person checking you out will select 'no tip' before they even hand it to you to approve the charge.