If you encounter the dreaded "Blue Screen of Death" when you use Windows 10, you might also see a QR code show up in the future. Microsoft is quietly testing the addition of QR codes for at least a few Windows 10 users.
Reddit user 'javelinnl' (via Neowin) posted a screenshot of a VM version of Windows 10 with the QR code. In theory, users could use a smartphone and scan the code, which can then take the user to a specific support page. They could get more info on the error and troubleshoot their PC to find out what caused the crash and prevent it from happening again.
Such a QR code, combined in a BSOD alert, could make finding and fixing a Windows 10 issue much faster. There's no word on when, or if, Microsoft might add this new feature for all Windows 10 users.