This autonomic nervous system dictates the movement of the iris to regulate the amount of light that enters the pupil , like a camera lens .
这一自主神经系统控制着虹膜的活动,以限定进入瞳孔的光线数量,就像一个摄像机镜头。
The scheme aims to give everyone in the country a number and to be able to identify them through fingerprints and iris scanning , using remote systems that consult a central database over the internet .
It is hard to look at the small blonde child on the right , her eyes expressly made creepy by the smudging of one iris , and not feel that modigliani was trying to paint human pain itself .
The government 's proposal expands and clarifies what constitutes personally identifiable information , including unique biometric data such as a fingerprint , voice print , retina or iris image , or any other unique physical representation .
Classified " human intelligence directives " issued in the name of clinton or her predecessor , condoleezza rice , instruct officials to gather information on military installations , weapons markings , vehicle details of political leaders as well as iris scans , fingerprints and dna .
The foreign office plans to spend up to 15m on fixed and mobile security devices that use methods including " facial recognition ( two and / or three dimensional ) , fingerprint recognition , iris recognition and vein imaging palm recognition " .
The us asked its diplomats to steal personal human material and information from un officials and human rights groups , including dna , fingerprints , iris scans , credit card numbers , internet passwords and id photos , in violation of international treaties .
Some of this infra-red light disappears into the pupil ( the dark opening in the centre of the iris ) , and some of it bounces back off the iris ( the coloured part of the eye ) , the cornea ( the back of the eye ) , the eyelid or the surrounding skin .