via mndaily.com
Students of University of Minnesota forestry class is using QR codes on trees which on scanning provide information about the specific tree. This includes a video interview with experts, as well as picture of it's flowers, fruits and how it is used in landscape as well as it's origin among others.
A wealth of information that would not typically make it on a sign. The QR Code is ideal for this use case as it provides quick access to relevant information.
A great use case for botanic gardens around the world!
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