Iris / Iris

Everything you want to know and more about iris recognition by its inventor, John Daugman:

Tout ce que vous voulez savoir, et bien plus, sur la reconnaissance de l'iris par son inventeur, John Daugman:

Another excellent documented website from Jan Ernst:

Un autre site très bien documenté, de Jan Ernst:

Les francophones consulteront la thèse de Christel-Loïc TISSE:

Iris recognition has got its famous case with the afghan woman on the National Geographic cover who has been identified thanks to her green eyes.

iris afghane

Voici le cas bien connu de l'Afghane aux yeux verts dont l'identité a été confirmée grâce à la reconnaissance de l'iris.

Iris recognition uses iris images captured in the near infrared bandwidth. The iris color is not used, this is rather the iris structure which is recognized.

structure de l'iris

La reconnaissance de l'iris nécessite de capturer une image dans le proche infrarouge (invisible). La couleur de l'iris n'est pas utilisée, c'est plutôt son relief qui est reconnu.

An "iriscode" is extracted from the iris, once it has been localized

iris + iriscode

Un "iriscode est extrait de l'iris, une fois qu'il a été localisé

Heterochromia iridium (differing iris colors) and heterochromia iridis (a variety of color within a single iris) are relatively rare in humans and result from increased or decreased pigmentation of the iris. Most cases are the result of an alteration in the expression of the EYCL3 gene (which codes for brown/blue eye color) and EYCL1 (which codes for green/blue eye color), among other genes within the cells of the entire iris or even a particular section. Other potential causes include trauma around the time of birth or later in life, congenital pigmented nevi or even medications such as those used in the treatment of glaucoma.
David Bowie's eyes are in fact of the same color - his pupils are of a different size because one is permanently dilated after a fight with a schoolfriend. It doesn't help for iris recognition, sure.

heterochromia iridium David Bowie


Previous links already give most answers, but I give here some details about some specific questions.

Les liens précédents répondent à la plupart des questions que vous pourriez vous posez, mais dans certains cas, j'ai voulu apporter ma contribution.

Commercial products

L-1 (Iridain, Iriscan, Sensar)

Capturing an iris


LG 2200 LG Irisaccess 3000


OKI OKI Irispass-M


Panasonic BM ET100 Panasonic BM ET300 Panasonic BM ET200 (2006 Dec)




(Iridian license)

IrisGuard ig h100



Senex Technologies



Evermedia Evermedia EC-I100 Evermedia EC-I300 Evermedia EC-I400

Smart Sensors

Smart Sensors



xVista camera phone



Beijing Eyesight

Rehoboth Tech


Eyelock (Hoyos)

BI2 Technologies

Delta ID

Princeton Identity



武汉虹识技术有限公司 Wuhan Hongzhi Technology