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license for private toolbox

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John
John 2013-8-14
I am a software developer who has developed a private toolbox. Is there anyway I can have some kind of license control on the toolbox to prevent a customer from unrestricted distributing the toolbox.
Possible approaches: Piggy-back on the matlab license manager? A mxLicense( ) function to let me check the license number from C code?

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Jan
Jan 2013-8-15
The license number can be check easily by using the license command in mexCallMATLAB. But this can be replaced easily by a user-defined function, such that this does not have a severe security level.
You find many discussions here and some contributions in the FileExchange for creating a unique machine ID. And internet search engine might be more efficient than the forum search.
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Jan
Jan 2013-8-17
As far as I remember license replies a double. Then:
mexPrintf("License number: %g\n", mxGetScalar(plhs[0]));
John
John 2013-8-19
The result is not a double, but a string. The following code gets the matlab license number as a string:
mxArray *plhs[1]; char str2[16];
mexCallMATLAB( 1, plhs, 0, NULL, "license");
mxGetString( plhs[0], str2, 16 );
mexPrintf( " \n str2=%s \n", str2 );

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