With the rollout of the Windows 8 operating system expected later this year, millions of desktop and laptop PCs will get kill switches for the first time. Microsoft (MSFT) hasn’t spoken publicly about its reasons for including this capability in Windows 8 beyond a cryptic warning that it might be compelled to use it for legal or security reasons. The feature was publicized in a widely cited Computerworld article in December when Microsoft posted the terms of use for its new application store, a feature in Windows 8 that will allow users to download software from a Microsoft-controlled portal. Windows smartphones, like those of its competitors, have included kill switches for several years, though software deletion “is a last resort, and it’s uncommon,” says Todd Biggs, director of product management for Windows Phone Marketplace.

 

Microsoft declined to answer questions about the kill switch in Windows 8 other than to say it will only be able to remove or change applications downloaded through the new app store.