via wvxu.org
This is a great use case: can convert a stroll in the park to an in-field learning experience. Doing this kind of stuff is very easy and manageable with Qryptal's database integrated QR Codes:
http://blog.qryptal.com/2012/09/bulk-database-integrated-qr-codes-with.html
QR code is a great invention people made. I'm making mobile apps currently and find it really cool to implement QR codes into them. I'm amazed at QR code coupons www.Snappii.com app builder allows to create. They are really helpful for small businesses.
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