I used the site QR Code Generator and typed the clues as Text and generated a code for each clue. You'll want to copy them to a word processing document or something like that, especially if you want to save them for another occasion. Then I printed and placed the codes around the school. Be sure to double-check your codes, order and placement so that the hunt runs smoothly for your students.
I had students work in pairs and take turns being the scanner. The clue pops up as text on the devices--we were using iPad minis. My students loved the activity and even asked to do it again!
I describe a different kind of QR Code activity that I did in my Spanish class here.
I describe a different kind of QR Code activity that I did in my Spanish class here.