Fingerprints and cornea are bad ideas to use as passwords. One of my friends likes to go hiking in this area a few miles away from million+ dollar neighborhood

Fingerprints and cornea are bad ideas to use as passwords. One of my friends likes to go hiking in this area a few miles away from million+ dollar neighborhoods. They get approached by someone pretending to be a union member and they get to chatting. The union member has to show them some video on his phone, and so my friend takes a look. There's a slight glitch in the guy's phone and my friend sees their own face for a brief second with what looked like highlighters around their eyes, kind of like those eye tracking things. They didn't think much of it until they read about cornea copying and hacking. They realized they were being "bio-hacked" but there is nothing they work on that needs bio clearance so they figure the union members were hired by some people to collect bio prints of likely targets in the area. Plus I heard it is common to use union and organized crime groups, police, etc.. to stake out and collect intelligence on possible targets for corporate espionage, and other related crimes. It seems to be an unspoken problem in the area.