Do you really think they would have retina scanning abilities? I'd assume that would be very expensive to implement in an ATM so I doubt they do that. I'm sure they do have a normal camera recording all activity though.
It is pretty crazy how much privacy they are attempting to take away though.
A robocoin atm costs $15,000-35,000 USD. A HD video camera necessary for retina scans costs $2000 USD. I'm pretty sure any BTM has a retina scan ready HD video camera.