A new Google Glass app will make it possible for people to answer the door by using their headsets.

The app, OKDoor, is the result of a collaboration between connected hardware company Brivo Labs and topcoder's development and design community. OKDoor receives an image from an outdoor camera when someone is at the door. The Glass wearer has the option of allowing or denying entry by tapping the Glass.

See how the app works in the video below: