I would say: forget it. You don't have a chance to achieve that in observable future.
Sorry.
[EDIT]
Well, just in case: it may give an idea of the current level of achievements in the field:
http://en.wikipedia.org/wiki/Facial_recognition_system[
^], see the section 'Weakness', Considering Iris Recognition marginally relevant to the Answer, one could feel more enthusiastic about this method because it's much easier, hence more successful:
http://en.wikipedia.org/wiki/Iris_recognition#Deployed_applications[
^]. Still those results are achieved by serious professionals.
[END EDIT]
—SA