Of course, that software feature will need hardware to support it. HP's Elite X3, a phone that doubles as a laptop, has a fingerprint scanner but we'll have to wait and see if other device makers adopt the Windows Hello tool. Microsoft says while some OEMs have experience with fingerprint components from FPC and Synaptics, using scanners from other companies may take a bit more effort to work alongside Windows 10. The Anniversary Update that will deliver the feature is in testing now, and it should arrive in July for both desktop and mobile.