[The improved version of the device is compared] to the office colleague who might wait in your doorway to establish eye contact before interrupting. "Eye contact is used to negotiate attention, and it’s fascinating how it works in humans," Vertegaal says. "We can have technology do the same thing."

A phone on vibrate-mode already does something similar, but I love the dream.

Super Creep!

Meant to say Super Creepy, but Creep works too

Pop, at least partly for sohil's comment(s)