Secure Quick Response Code (SQRSQRC) code is a QR code that contains a "private data" segment after the terminator instead of the specified filler bytes "ec 11".<ref>{{cite web|url=https://fukuchi.org/works/qrhack/qrhack1.html|title=Embedding Secret Data in QR Code|access-date=29 October 2018|archive-date=30 October 2018|archive-url=https://web.archive.org/web/20181030090645/https://fukuchi.org/works/qrhack/qrhack1.html|url-status=live}}</ref> This private data segment must be deciphered with an encryption key. This can be used to store private information and to manage a company's internal information.<ref>{{cite web|title=SQRC|url=http://www.qrcode.com/en/codes/sqrc.html|website=qrcode.com|access-date=26 December 2017|archive-date=1 January 2018|archive-url=https://web.archive.org/web/20180101191507/http://www.qrcode.com/en/codes/sqrc.html|url-status=live}}</ref>
