Amazon has been quietly expanding its locker service that launched last year, and now lists locker locations in Seattle, New York, Washington, DC, and London. You can choose to have your reasonably-sized Amazon packages shipped directly to one of these lockers found inside select 7-Elevens, instead of missing the delivery person or worrying about a Kindle sitting on your doorstep until you make it home from work. But it seems Locker Delivery isn't just in those four areas: as first noted by TechCrunch, Amazon has a tool to search for nearby lockers, and several Silicon Valley locations are showing up. So far we haven't had much luck unearthing any other new cities, but let us know in the comments if Amazon has operational lockers near you.