Other plans to kill the password are more…esoteric. At the AllThingsD conference in 2013, Regina Dugan, Motorola’s head of advanced technology and projects group, outlined some of the ambitious experiments in progress to obviate the need for PINs.
Using an electronic tattoo for password-free device authentication sounds crazy—do you really want to brand yourself forever to skip your phone's lockscreen?—but it's already happening. Just this week, Geek.com reported that VivaLnk worked with Motorola and now offers temporary tattoos with a small NFC sensor that can be used to unlock your Moto X. The tattoos come in packs of 10 for $10 and stay on your skin for 5 days.