Need to capture Eye Lens of a Human picture

[Ravi Kiran Va]

Hi ,

Please tell me if this is possible .

If i have two human picture , is it possible to differentiate those two pictures with a programming language .

I heard from my collegue that eye lens of any human picture will be different .

[Joe Ess]

I've never heard of using the lens of the eye as an identifier.
Is your colleague thinking of a retinal scan?