Essential

Tip about Copenhagen: if you use a US stripe credit card (no chip-and-pin) be prepared for some bad experiences. Almost no business takes it. Unless you carry a bag of coins with you, you will also not be able to buy metro tickets at the station. This app solves it. Punch in your US credit card number and buy right in your phone. Brilliant. They should do it in NYC

Luca Falda about DOT Mobilbilletter