i didn't have to register my finger. i registered my face. i can put in a passcode if i want. the other thing that's on here is motion itself. i can take a picture of myself on the front camera and a blur in the background looks pro-level so that's really nice. you mentioned and emoji appeared to be what i need to know about them. >> these are these great little things that are the tracking your face. >> shep: you tweeted about it. >> i did. basically, i don't think you can see it right now, but basically what it does, it tracks everything you're doing, your facial muscles, your mouth moving. and of course of the audio. ten seconds for our message to send it over to somebody. with third-party developers start to tap into the technology and start to do things we haven't even imagined.