Woltz is pleased that his idea translated into a swift recovery, but also a little regretful he didn't think of using QR codes – they could have encoded suffici

Woltz is pleased that his idea translated into a swift recovery, but also a little regretful he didn't think of using QR codes – they could have encoded sufficient data to automate the entire remediation process. I don't follow this, what could they have done with QR codes?