Buying a used phone from someone on Craigslist or eBay is never not sketchy, but thankfully Apple’s now rolled out a tool that could keep you from paying for stolen (and useless) property. The company has launched a new website that instantly checks to see whether Activation Lock — an anti-theft feature of iOS — is switched on for any iPhone or iPad. It’s part of iCloud, but you don’t need any type of Apple account to use it. You will need to access it from a desktop browser, though; mobile Safari bizarrely isn’t supported right now. That makes no sense, but oh well.