If you are already using the EN/track program, the following steps are advised:
 
Make a backup of the database through the EN-Track program
Remove the EN-Track software via the Windows configuration option `Remove-Install software`.  If seperatly install, alos remove the drivers for the Towitoko chipcard reader
Remove the reader from the USB (or RS232) port.
Reboot the PC
Install EN-Track. maybe a warning apears saying the driver software is not certified by Microsoft. Choose the option to continu.
Connect cardreaders. (maybe you must confirme the installation of the hardware drivers)
 
note: If you use a serial cardreader, then after installation and connection of this reader, you must Re-Boot the PC again.

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