Microsoft announced on Monday that the 'secure release' feature of Universal Print-supported printers now works with QR codes scanned by Android or iOS devices.

Citizens can now download these documents online, make copies, and easily verify them using the embedded QR codes.

Researchers have developed a way of printing edible QR codes -- a kind of barcode -- within cookies, meaning that the tag is embedded within the food itself. Crucially, the tag doesn't change the ...