Following a documentary on TV about identity theft from the chip on your credit/debit card, several customers either showed me a security envelope they had obtained from their banking institution, or expressed a desire to obtain one.
I researched the problem on the internet and found instructions for making envelopes or sleeves which hide the chip from the intrusive device.In addition to this security precaution, users are recommended to stack their chip cards together to further confuse the devices in their attempt to read the chip from the edges of the cards.
Hope Stationery now makes these security sleeves with a wide variety of decorative skins: