The City of Paradise Valley, Arizona (population: 12,820) is so concerned with keeping its newly deployed license plate reader (LPR) system a secret that it has installed dozens of fake cactuses with the cameras mounted inside. The wealthy Phoenix suburb has been reticent to explain why the cameras are necessary. Fox 10 News, a local television station, reported earlier this week that the Paradise Valley Police declined to comment on the installation of the devices. Kevin Burke, the town manager, provided Fox 10 with a confusing answer, saying that the LPRs were not active.