How do I prevent 2 or more computers from using a Port-Sharing device to "share" a single Key? : EverKey Support

How do I prevent 2 or more computers from using a Port-Sharing device to "share" a single Key? Print

Modified on: Fri, 5 Dec, 2014 at 6:55 AM

It is quite easy to prevent this.

When your program starts, generate a Random Number, store it in a Static variable and then use KeyChk Function 3 to store it to a specific offset in your Key's User-Data.

Throughout your program's operation, you can use KeyChk Function 1 to check the Key's User-Data to ensure that the random number is the same.

If another computer is also running your program during this period, and using the same Key (via a Port-Sharing Device), a different Random Number will have been written to the User-Data.

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How do I prevent 2 or more computers from using a Port-Sharing device to "share" a single Key? Print

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