Answer:
Fingerprints are cool but think of how easy it is to get a fingerprint off of someone. You touch so many surfaces throughout a day, capturing it might not be the hardest in the world. Facial recognition may not be the best either but maybe slightly better than fingerprint because holding a picture of someone shouldn’t work, you’d need to have the curvature of their face and some natural features like a birthmark. I’m not so sure how retina scanning works systematically, but recreating the features of someone’s eye seems to me like it may be the hardest to breach.
Step-by-step explanation: