In a limited trial only, USPS is testing something new this year. They call it "The Most Wonderful Ornament," and it's basically a Christmas ornament you hang on your tree that changes it color as the status of your package is updated. Blue signals on the way, red for arrived and green for when it's opened.
The Most Wonderful Ornament uses cellular technology and a sensor that actually lets you know when the box is open. It's a more festive way to track your packages this Christmas Season!