William Gallagher / AppleInsider:

Report: Apple uses microscopic QR codes on iPhone screens to track defects, which helped reduce faulty screen report rates from its suppliers from 30% to 10%  —  Apple spent millions to add a barcode to iPhone displays in order to save being charged hundreds of millions by manufacturers claiming faulty screens that may not have been.

William Gallagher / AppleInsider:

Report: Apple uses microscopic QR codes on iPhone screens to track defects, which helped reduce faulty screen report rates from its suppliers from 30% to 10%  —  Apple spent millions to add a barcode to iPhone displays in order to save being charged hundreds of millions by manufacturers claiming faulty screens that may not have been.

Source: TechMeme
Source Link: http://www.techmeme.com/230929/p10#a230929p10