Would you rather unlock your smartphone with a plain four-digit PIN or with a smiley-
face emoji? Would it be easier and more pleasant to remember a sequence of emojis or "2476"?
Smartphone users commonly use emojis to express moods, emotions and nuances in emails and text messages – and even communicate entire messages only with emojis. In 2015, a British company tried using emoji passcodes in place of PINs at bank ATMs. But there had been no formal study of how easy they were to use, or how secure they were in comparison to other methods, like PINs.
To learn more, in the lab and in the real world, a team of researchers from the Technical University Berlin, Ulm University and University of Michigan, led by TU Berlin Ph.D. candidate Lydia Kraus, developed EmojiAuth, an emoji-based login system for Android smartphones. How well would users remember their emoji passcodes? Could they be more secure, too? And might they be more fun, adding a bit of enjoyment every time a user unlocked her phone? https://www.livescience.com/58961-will-emojis-be-your-next-password.html
