Do all processors have a CPU ID

[NSNewey]

Hi,

I have written an application and want to lock it to individual PCs.

I have found some code which gets the CPUID of the processor.

This runs fine on my PC but do all processors have this info. ie an AMD processor?

Also, does anyone know what the CPUID is. It seems to be a hex number but I am not sure and I need to convert it to an integer so that I can apply a simple encryption to hide what the user is entering?

 

[cjelec]

There are settings in the BIOS to limit the length of the CPUID, and this will make the code not unique and could break your security...

I have used HDD ID and ChipSet ID, same idea but different code...

 

[Mastakilla]

All CPU's have an ID but it is not a unique ID, it's the cpu "series ID". Thus if your clients buy a lot of computers at a time with the same configuration and at the same supplier, the chance are that some (if not all) of these cpu's will have the same ID.

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