Homebrew PCBs

At Fri, 17 Mar 2006 01:15, davelandnni wrote:
>With the internet it is easy for them to add the "spyware" needed to
>insure the license file is not copied and used by someone else. Just
>use the MAC or IP address of the machine as the "key".

Probably unworkable in general, since these numbers are not immutable
and may or may not be under the control of the user.

MAC address is tied to a hardware interface so moves & dies with it
but MAC addresses can be spoofed on some hardware.

A computer may normally have different public and private IP numbers
each unknown from the other domain, by connection through a firewall.

Further, IP numbers may not be 'permanent'; being (re)assigned by
a leasing scheme or computer support, or tied to the current ISP.

So there is potential for much grief, either from pirated licences
or from legitimate but broken ones, and neither the vendor's nor
the purchaser's interest is protected.


Regards, LenW
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