RFID chips can already be found in contactless CARDS, including bank CARDS and the Oyster system which is used by more than 10 million people to pay for public transport in London.

射频识别芯片已大量应用于非接触式卡片，比如银行卡和超过1000万伦敦人支付公交费用使用的“牡蛎卡”。

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But many people do not check their Oyster or bank statements.

BBC: London bus contactless system charging wrong cards

This happens when your bank card and your Oyster card are next to each other in your wallet.

BBC: London bus contactless system charging wrong cards

I've also been contacted by TfL staff who are getting charged on their bank card instead of their free staff Oyster card.

BBC: London bus contactless system charging wrong cards