One way to solve the technical barrier for people to scan QR Codes would be to include a QR Code scanner in the native camera app of a Smartphone. People will not need to install a 3rd party app anymore and direct support in the OS will make QR Code decoding much faster.
iPhones with iOS11 support native QR Code Reading
Microsoft Windows phones support native QR Code scanning
Microsoft did a first step towards QR Code recognition in their camera app, but with only 2.6% market share in the worldwide smartphone market this is just a small portion. Lumia phones have a built in QR Code Reading App, but making a QR Code readable requires to setup the camera every time a QR Code is scanned. Using a 3rd party scanning app is much more comfortable.
Google is afraid of QR Codes killing their Ad business
An assumption why Google has no interest in supporting QR Code decoding in the native camera app is because a direct link in the QR Code bypasses Google Search. Google wants you to use their search engine for displaying ads and tracking your behavior instead of directly linking you to a website.
Motorola as a first mover
There are native QR Code scanning solutions for Windows, iPhone and Android devices. However Microsoft needs to improve the UX drastically, so that people will actually know how to use the native camera function for scanning QR Codes instead of downloading a 3rd party app. If Google sees a potential harm in affecting their ad and tracking business, they could release a native camera app that tracks all QR Code scans and previews the target URL of the QR Code in addition with some ads displayed below before redirecting the user to the website. Finally Apple included native QR Code decoding since the Asian market is using QR Codes almost everywhere and Apple might wants to be a player in the QR Code payment industry. Let’s see how Android will follow…