"Retinal scans" refers to a method of technology that uses your eye to identify you. It captures your unique vein patterns in the back of your eye to authenticate your identity. Full definition
Peng's team gathered 128,000 retinal scans from hospitals in India and the U.S. and assembled a team of 54 ophthalmologists to grade them on a 5 - point scale for signs of the disease. (scientificamerican.com)
The Assembly will vote on bills recommended by the committee to ban the collection of students» biometric data such as retinal scans and fingerprints, to protect private student information and to require DPI to post on its website data it collects about students and prohibits DPI from releasing that information to federal agencies. (host.madison.com)
Now, computers could be fooled before facial recognition, and let's be honest, there's no Facial Rec or Retinal Scan system in place yet. (politics.stackexchange.com)