Oh. Yeah. Use a body, do physical things like shake hands. She shifts the bag to her left hand to accept Drift's with her right. The artificial skin feels warm and pliant like a human's would, and if someone--say, a giant space robot whose people only recently made contact with Earth--were unclear on the normal range of human pigmentation, there's nothing about Cortana's robot body to suggest it's mechanical.

"You're not the only one who's more than meets the eye," she says with a smirk, scanning everything the Legion World computers have on him between words. ...Oh, boy. Drama. "Cortana. I'm the Master Chief's AI partner."