I'm going to suggest to you the technology to implement Doctor Who's psychic paper is already here, and if any of you have got one of the new Barclay's debit cards with the contactless interface on it, you've already got that technology.
我想建议你们， 来实现神秘博士的通灵卡片， 其实所需技术早已存在。 如果你们任何人有这种 巴克莱银行新发行的、 具有非接触界面的借记卡， 你就已经拥有这种技术了。