美大学开发人造指纹,可解锁全球1/3智能手机

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Artificial fingerprints have been developed by researchers. They say the fingerprints could one day be used to hack into everyday devices. Researchers from New York University and Michigan State University successfully generated what they call "DeepMasterPrints". These are machine-learning methods that act as a kind of "masterkey". The researchers claim it has the potential to unlock about one in three fingerprint-protected smart phones.
"Phones and many more devices don't capture your entire fingerprint," researchers said. "There's not enough space on the device. So they capture a partial fingerprint, which is not as secure as the full image. "Many developers were already making fingerprint scanners more secure by moving sensors from devices' buttons to screens, allowing them to pick up higher resolution images.
"Some smartphones have the sensors on the side buttons, which are very thin—they're convenient but less secure," the researchers said. "Their sensors only capture a quarter of the fingerprint's features."

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1. What are the machine-learning methods like?

A    A kind of key.

B    A kind of device.

C    A kind of fingerprint.

D    A kind of "masterkey".

  • A
  • B
  • C
  • D

2. What does the underlined word “capture” mean in Chinese?

A    捕捉.

B    打开.

C    关闭.

D    安装.

  • A
  • B
  • C
  • D

3. Which of the following is NOT true according to the passage?

A    Researchers have developed artificial fingerprints.

B    The masterkey may unlock about one in three fingerprint-protected smart phones.

C    Many developers were already making fingerprint scanners more secure.

D    Some smartphones have the sensors on the side buttons, which are more secure.

  • A
  • B
  • C
  • D

4. The sensors on the side buttons can capture _______.

A    one in three of the fingerprint's features

B    a quarter of the fingerprint's features

C    one in five of the fingerprint's features

D    half of the fingerprint's features

  • A
  • B
  • C
  • D
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