Goodbye Passwords, Hello Clef

Remembering usernames and passwords is a modern-day problem most of us have to deal with daily. Brennen Byrne and Jesse Pollak were tired of it, so they decided to build Clef, a mobile app that replaces usernames and passwords with your smartphone. With Clef, you don't have to type or remember anything – well, except for your PIN for accessing the app and keeping your phone safe. Once you're in the app, just scan a Clef QR code to log in to a website. Sites that currently use Clef include WordPress, StackOverflow, LiveJournal, HootSuite, WiserGiving, ErliBird, and 5C Ride Share.

Based on military grade cryptography, Clef is roughly equivalent to using a newly generated 300-character password whenever you log in. Clef is also designed to handle breaches and be super secure, so your identity will remain safe even if the company's entire database was exposed. And should you ever lose your phone, you can deactivate it remotely via the Clef website.