validating "per use" licensing

Bob Sneidar bobs at twft.com
Thu Jul 12 13:46:34 EDT 2012


It is feasible, but I must say that when searching for software for a particular application, when I encounter a per use license, I look elsewhere. 

Bob


On Jul 12, 2012, at 10:34 AM, Dr. Hawkins wrote:

> I want people to be able to pay "per use" for the product.  In this case,
> it would mean per client file.
> 
> My thinking is that I embed a large random string in the source code of
> their copy, and keep a copy of the string myself.  When a license is
> purchased, it would be for a particular last name and last four digits of
> that client's social security number.  Upon payment, my server would run a
> hash on the random string, the name of my customer, and the client info
> from their customer, and produce a key.  At the client end, this key is put
> in a list.  When the program runs, it would run the hash, and if the key
> exists, it could proceed.
> 
> Is this a sensible approach?  And and any suggestions on the hash to use?
> 
> 
> -- 
> The Hawkins Law Firm
> Richard E. Hawkins, Esq.
> (702) 508-8462
> HawkinsLawFirm at gmail.com
> 3025 S. Maryland Parkway
> Suite A
> Las Vegas, NV  89109
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