a little out of date of what password protected systems are easy to implement that's probably why they're so common. that. that's a cost to see e-mails and so on the most sense as i can use to scan a fingerprint or face the more accurately i can capture someone's biometric profile for. the security of this technology depends on how well it's implemented or if there are enough senses this is more secure than passwords to follow. solution finger up talk iris recognition fingerprint scans and facial recognition similar in the sense that the old check for a single constant biometric feature or. which the system recognizes me for a password by contrast is something i need to memorize i should write it down anywhere