Virtually everywhere you are required to use a PIN-code with your card, so if this is not common practice in your country, remember to request one from your bank before leaving home.
Cishe yonke indawo lapho ucelwa ukuthi usebenzise i-PIN-khodi nekhadi lakho, ngakho-ke uma lokhu akuyona into evamile ezweni lakho, khumbula ukucela eyodwa ebhange lakho ngaphambi kokuhamba ekhaya.