Protection against item-swap scams and “it arrived broken” claims on eBay and other marketplaces. Just include the screen in your photos to prove when they were taken.
1Before shipping, photograph or film the item together with the TakenAt screen.
2Shoot serial numbers and scratches the same way, with the screen in view.
3If there's a dispute, show the photo to support or the buyer and have them check the QR or code.