Notes about the DRPF file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The DRPF file type is primarily associated with 'DinkeyRemote' by Microcosm Ltd..
A Dinkey dongle is a small piece of hardware which is part of a sophisticated system designed to protect your software from illegal copying.
You can lock your software to a dongle so that each time you run your protected program, it will check for the presence of the dongle. If the right dongle is found, the program will be executed, otherwise it will not run.