Amazon rolls out 'X-ray vision' so you can check what's in your packages

Amazon is giving its app a new feature to help holiday shoppers keep track of what's in their packages.
The new “Package X-Ray” feature on Amazon's app allows users to see what’s inside a box by scanning the package barcode with the iPhone’s camera.
Once scanned, the app will show which of your orders are inside.
Though not as cool as actual x-ray vision, the feature should be pretty useful for holiday shopping — especially if you're trying to keep a particular shipment hidden from prying eyes.