Without a word to his family, Ludwik Zon donned his Sunday best and rode off on his bike to catch the bus and train to Warsaw, then flew off to the British capital.

一句话也没对家人说，路德维克．佐恩穿上他最好 的衣服， 骑上 脚踏车赶搭开往华沙 的巴士与火车，然后直飞英国首都。

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When these residents catch a train or bus, or take out money from an ATM, they will scan their irises, rather than swiping a metro or bank card.

FORBES: Could Iris Scanners Replace Our Wallets?

So get on the bus, catch a train, rent a car or saddle up your bike.

BBC: Historical day trips from Boston