Latest driver for the Hardware Key
This is Sentinel System Driver Installer for SPI 7.4.0, the latest key driver from the vendor of our security hardware key. It includes only drivers and not the servers, which is all that is needed. The same driver is used for WinCal 3.x, 2006 and XE. If your WinCal installation is working fine, and WinCal recognizes the key, there is no need to upgrade, but if you have changed to a new computer and have problems you can download this latest driver.
