Cash is highly regulated, in a lot of EU countries it's not even possible to spend too much cash in a shop in a single transaction. Cash transactions over XXX a

Cash is highly regulated, in a lot of EU countries it's not even possible to spend too much cash in a shop in a single transaction. Cash transactions over XXX amount (few thousands) require identity and they have to be reported by the seller as well. Carrying over 10k euro in cash has to be declared during air travel too.