I think that security will be very discussed thing once IoT will be more spread. I also think that Mozilla could be first to solve it and Persona could help with it. I imagine using it for authentication of connected devices in my home.
What does Persona offer that brings value from an IoT perspective?
The bootstrap primary (which is on life support, with the one hand ready to pull the plug) requires a functional javascript engine to authenticate a user, which is a steep cost of admission. In it's absence you have to implement the entire protocol, and Persona is less feature rich and far less supported than OAuth, and I say this as an ardent defender and promoter of Persona :)
