By registering your wristband you will benefit from enhanced customer support, social media features, merchandise specials and potential upgrades. Register your wristband prior to applying it onto your wrist. You will be unable to read your Unique ID number once on your wrist.
After registering your wristband on Coachella.com you will have the option to connect your Facebook account. Swipe your wristband to check in automatically at any of the RFID portals near stages and throughout the festival.
So now when you go to a stage, it'll check you in on Facebook that you're at So-and-so stage watching this band or that (presuming you care enough to go to the RFID scanner at each tent.)
Now if only they had some for the camp grounds.