Well, this system would decrease the risk of identity theft because you can't get an ID issued without getting scanned/examined.

It would be a bit stupid to base an identification system, like that of a bank or credit card or whatever, on earlobe shape or Iris alone. But in combination with other factors it might be quite secure.

I think Earlobe shape can be used for identification in video footage. Iris scans only if you have a really good camera and a lot of luck. Otherwise it's really hard.