Sensors-on-lampposts have become a smart city cliché, the go-to image of urban technology in action. But these projects have a Bigfoot quality about them: often discussed, seldom seen.
Read MoreSan Diego has previously been better known for being the headquarters of Qualcomm and the US Navy and Marine Corps , the latter employing more than 130,000 people across the city and home to the largest concentration of military in the world.
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