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Smartphones are everywhere, but they're easy pickings for criminals.

Here in San Francisco, high-end handsets are specifically targeted in more than half of all robberies.

Now, a new law means that smartphones in California will be required to have a "kill switch" which will make them useless if lost or stolen.

At the touch of a button, all the data on the phone is erased.

It's hoped this will help deter thieves, though some think the law will create other problems.

Vocabulary 词汇:

easy pickings 容易被人偷盗的东西

high-end 高端的

robberies 抢劫案

at the touch of a button 只需一触按钮就可以…

deter 威慑