Secondly, the features are extracted from the finger vein image.

其次，对手指静脉图像进行特征提取。

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Finger vein patterns differ from person to person, each finger to finger, and it is said that they do not change over the years.

每个人、每个手指的静脉分布图案都不相同，并且不会随时间变化。

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However, the finger vein recognition technology can completely overcome the defects listed above, making the identity authentication easier and faster.

而我们的手指静脉识别技术能完全克服上面的诸多缺点，使得身份认证更加方便快捷。

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One workshop I found to be particular interesting focused on the privacy implications of biometric data, including fingerprinting, finger vein scanning, retina scanning and facial recognition.

FORBES: Data Privacy Commissioners Discuss Ubiquitous Tracking

Other emerging technologies are palm and finger vein readers.

CNN: Fully biometric airports becoming a reality

Already in use in the banking sector in Japan, these scanners are thought to be more accurate than fingerprinting since a person's fingerprint alters in childhood whilst palm and finger vein patterns remain unchanged from the womb.

CNN: Fully biometric airports becoming a reality