Universal has a mandatory locker system at its big thrill rides. Lockers outside these attractions are free for the first 45 minutes, then $2 for each hour after that, with a $14 maximum per day.
The locker banks are easy to find; each bank has a small computer in the center. When the sun is bright, the screen is almost impossible to read, so have someone block the sun or use a different computer. After selecting your language, you press your thumb onto the keypad and have your fingerprint scanned. We've seen people walk off cursing at this step, having repeated it over and over with no success. Most patrons press their thumb down too hard. The computer cannot read your thumbprint if it's squished together, so take a deep breath and just place your thumb on the scanner.
After your thumb scans, you'll receive a locker number. Write it down! When you return from your ride, go to the same kiosk machine, enter your locker number, and scan your thumb again. At Guest Relations, family-sized lockers are available for $10 for the entire day, but remember that only the person who used his or her thumb to get the locker can retrieve anything from it.