Re: Generating Unique ID
Re: Generating Unique ID
- Subject: Re: Generating Unique ID
- From: "Alastair J.Houghton" <email@hidden>
- Date: Fri, 5 Sep 2003 14:22:30 +0100
On Friday, September 5, 2003, at 01:34 pm, j o a r wrote:
Also, as Douglas Davidsson mentioned earlier on this list (or offline
to me, I don't remember), there is a small privacy problem to keep in
mind, since the UUID contains information about your machine that you
(or your user) might want to keep private.
Yes, he was talking about the fact that it contains the (unique) MAC
address of your Ethernet card, which means that the source of a
document file containing a UUID can be determined at a later date. I
believe this has been used in court to demonstrate that a particular
e.g. Word document came from a particular person's PC.
Having said that, most Ethernet cards allow the end-user to change the
MAC address (but please don't, because vendors of Ethernet hardware
*purchase* unique address ranges... if you alter your address, there
might be a clash, which can cause a *lot* of trouble).
Kind regards,
Alastair.
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