An anonymous reader writes: License plate scanners are a contentious subject, generating lots of debate over what information the government should have, how long they should have it, and what they should do with it. However, it seems policy changes are driven more by practical matters than privacy concerns. Earlier this year, Ars Technica reported that the Oakland Police Department retained millions of records going back to 2010. Now, the department has implemented a six-month retention window, with older data being thrown out. Why the change? They filled up the 80GB hard drive on the Windows XP desktop that hosted the data, and it kept crashing. Why not just buy a cheap drive with an order of magnitude more storage space? Sgt. Dave Burke said, “We don’t just buy stuff from Amazon as you suggested. You have to go to a source, i.e., HP or any reputable source where the city has a contract. And there’s a purchase order that has to be submitted, and there has to be money in the budget. Whatever we put on the system, has to be certified. You don’t just put anything. I think in the beginning of the program, a desktop was appropriate, but now you start increasing the volume of the camera and vehicles, you have to change, otherwise you’re going to drown in the amount of data that’s being stored.”
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