The best way to do it would be to compile your code into a COM add-in.

Workbook protection is not and cannot be made secure.

In article ,
bijan wrote:

Hi,

Is there any software (licensing tool) to protect excel workbooks against
being copied from hardware to hardware? I have created an application within
a workbook which I need to distribute with a license agreement and key etc.

any ideas ?

Thanks
Bijan