He'd done a little better with the GPS, which had a rocker keypad built into the right temple. The fifteen-channel receiver seemed to have really good lock-on, but the tutorial seemed to have been translated badly, and all Rydell could do was zoom in and out of what he quickly realized was a street map of Rio, not LA. Still, he'd thought, taking the glasses off, he'd get the hang of it. Then the phone in the left temple had beeped, so he'd put the glasses back on.