Often someone complains that the traditional Windows logon authentication way using password is not convenient enough (especially for those PCs set up with a very complex login password), and its security is not high enough. This case, you can try Rohos Logon Key this useful tool from Moldova. It is capable of using a USB flash drive for system logon authentication. That's to say, you don't have to login Windows when it boos by inputting your password, instead, that just needs you to insert the specified USB drive.