Just read a story about a Belgium guy on holiday in Andulasia with his family and was burgled (at night) but they didn't take his credit cards and bank cards. A week later a few thousand Euros were taken off his CCs and he lost 500 € from his bank a/c. Thieves obviously had a scanner and copied his cards.
Keep hold of those cards and if you get burgled or suspect that someone has touched them, get them changed immediately!