For years, unlocking your devices felt like a tug-of-war between convenience and security. Face recognition stumbled if you wore sunglasses. Fingerprint scanners balked when your hands were sweaty or greasy. Passwords? A relic, and an insecure one at that. Yet here we are, watching palm recognition ...
instead of scanning your face (which can be spoofed) or fingerprints (which can be copied), these systems scan the ‘pattern’ of the veins running inside your palm – something that’s unique to you, and absolutely can’t be faked.
Was it done in such way it could just as easy to fool multiple scanners at the same time? As in scanning eye, finger and palm at the same time. Though I wonder how expensive/difficult/error prone it would be to implement something like that.
No, it was only focused on that one biometric. You can always just add another for security, though it is good to keep in mind, that bionetrics aren't necessarily as secure as they are often marketed as.
Fun fact: In the science fiction book "Qualityland" by Marc-Uwe Kling one biometric after another was shown to be insecure, leading to the people having do kiss their tablets/phones for authorizing money transfers, using OneKiss(TM), which is so more secure than other ways of authentication (trust me bro).