Pre-Boot Authentication ensures that registration at Windows and related encryption, such as the disk encryption, cannot be manipulated and circumvented by converting the hard drives, starting of USB / CD or the replacement of the operating system. The registration to the corresponding terminal will thereby take place immediately after the BIOS loading process, but before the start of the operating system. Besides passwords also many smart cards are supported as login security. Enterprise features such as help desk, self-initialisation and more, are also available. Login screens can be customised to each customer.