QR codes are used so much these days. However, for those unable to hold a phone steady while it captures the code or for those who cannot see where the code is located, they can be inaccessible. You can read about QR code accessibility at this website. To enable QR codes to be more accessible, a company, NaviLens, has developed a solution. Once the codes are more accessible, users need a NaviLens app on their phone to detect the codes. The advantage is that the codes can be detected from much farther away and the phone capturing the code does not have to be held perfectly still. NaviLens QR codes are currently in use on many products as a form of identification and information, and in cities to assist with navigation. This video illustrates how it all works.
I can think of many applications for accessible QR codes in education. For example, if phones are permitted in the lab, accessible QR codes could be used in science labs to enable equipment, supplies, and model location and identification. They could also be used to supply additional instructions and information in lecture and lab. Outside of the classroom they could be used to indicate the location of stairways, elevators, and exits; to identify buildings; and to mark emergency evacuation routes.
Accessible Science 