Just a few days after Yahoo admitted a huge data breach, it has added biometric security to the mail app on android.While unrelated, the developments do suggest a different trajectory for password-based security and that of biometrics.Last week, Yahoo confirmed it was the victim of one of the largest mega breaches in history two years ago when information on at least 500 million user accounts hacked. The company believes that the data breach was carried out by a “state-sponsored actor”.With the new biometric upgrade, people can now use a fingerprint scan on their smartphones as password to access their app inbox. The update is available on Google Play Store, reported the Android PoliceHowever, Eldon Sprickerhoff, chief security strategist of Cambridge, Ont-based cybersecurity firm eSentire, told CBC today that biometric tech isn't nessicairly a silver bullet.”Whatever this (new technology) is, it has to have broad availability. It has to have wide acceptance,” he told CBC News. “And for it to effect huge change, it takes a lot of time.”