I&#x27;ve watched them from up close; that &quot;device&quot; is simply an Android smartphone. If you&#x27;ve parked over time (in 75 or 90 minute zones, they&#x27;ll take a picture of their chalk mark too.)<p>The ones I don&#x27;t like are the robot &quot;meter maid&quot; cars studded with license plate readers and cameras - no need form them to mark each car, it just alerts when they&#x27;re passing one that was there during their last lap. Easier for them maybe, but as a parker I prefer the chalk so I can tell whether they&#x27;ve come by yet or not.<p>p.s. I&#x27;m in SB too - let&#x27;s grab a coffee.