MagikINFO offers comprehensive IT asset management, with an overview at any moment of who has been assigned which asset. To keep that overview as current as possible, you can run what's known as an online stock-take, having users confirm their current list of assigned assets themselves.
All a user needs is a web browser, plus the email that lets them know a confirmation request is waiting. Because the stock-take runs as a web app, there's no installation, no device management, and no worrying about updates — open the link, log in, and confirm (or flag) your assigned assets.