The trouble with making something super quick and easy to pay with is that it can also make fraud quick and super easy too.
Spotted by an eagle-eyed Facebook user (originally in Russia), the scam allows thieves to extract a quick £30 (AU$60) from your pocket without you even noticing, with the aid of an easily available card reader, and some custom software.
This matches with research Which undertook last year, where the company was able to steal card information, and order products worth AU$6000 online.
How to disable contactless payments on your debit/credit card
Which found that this was effective in preventing contactless cards being read.
If you want something a little more classy than a wallet filled with foil, you can get customised card holders which block the contactless signal - also handy to avoid card clash on public transport systems, like with the Opal card in Sydney. A pack of three can be purchased for less than $10 on Amazon.