Short description of Dekart Logon 2.21: Protect access to notebook and desktop computers running Microsot Windows 95/98/ME/NT/2000/XP/2003. Dekart Logon allows to store all your passwords to Windows machines on one removable storage device (USB flash drive or a CD), a smart card or USB token and adds the strong authentication and convenience to the standard Windows logon procedure. Whenever you leave the computer, you can temporarily lock the computer by simply removing the USB key.