The recently exposed 'Sri Lankan' card scam seems to involve someone scanning the magnetic strip and using a pin entry keyboard that has been tampered with to get the pin.
I understand that there is a complex authentication and encryption process between the chip on the card and the combined card-reader and keypad which should mean that duplication or reading of the chip's data is rather more difficult.
I therefore believe that I can greatly increase the security of any transaction by wiping a damn great magnet over the magnetic strip on my card, thereby destroying the data contained on it.
I would in future tell any retailer where a transaction relied on the presence of the magnetic strip to get stuffed.
Discuss.