+ 0 Votes That would be a function of the software that runs the webcam robo_dev August 13, 2013 at 12:47pm PST Never tried it, there is an app called iSpy that claims to do that. + 0 Votes 3rd Party Software tmalo627 August 20, 2013 at 3:00pm PST Having a webcam running while the PC is in locked mode is considered a security issue. Windows does not have this functionality built in to it. When a PC is locked, it's locked (as far as Windows settings go). You'd need some type of 3rd party software as robo_dev suggested.