* Cell phones equipped to read QR codes (e.g. iPhones, Android-powered devices like the HTC Dream/T-Mobile G1, and the Palm Pre, many Samsung and Sony-Ericsson models, and most Nokia phones).
* paper & tape (or stickers to print the QR codes onto)
Also called gps geocaching, see comparison chart for types of scavenger hunt events with this option [http://www.teamscavengerhunt.com/compare-scavenger-hunts/ Team Scavenger Hunt Event Comparison Chart]
===Set Up===
Also called gps geocaching, see comparison chart for types of scavenger hunt events with this option [http://www.teamscavengerhunt.com/compare-scavenger-hunts/ Team Scavenger Hunt Event Comparison Chart]