Tally's interface ring is small, but it's basically a tracking device that lets her interact with all the smart devices in her world. (Is it crazy to imagine tracking teens? Not so much.) Here's a literal party machine: it's a machine that makes parties.

What is the interface ring in the uglies?

A city's interface is a repository of information available to anyone at anytime and can also be used to communicate with people and objects. Interface rings are assigned to nearly every citizen. Interface rings can perform the following tasks: Access the city interface.

What is Peris's nickname in uglies?

Peris, Tally's best friend, is three months older than Tally and thus has become a Pretty. He helps Tally decide to betray Shay. His Ugly nickname was Nose. Ellie Youngblood is Tally's mother who helps Tally decide to turn in Shay.