At 12:34 PM 4/29/02 -0400, Miller, Keith wrote: >Why would you want to protect data itself? If you do not want shared do >not release it. GIS data should be accessible to all in need.
Interesting question. "Protection" can mean many different things. You have implicitly assumed it means restricting access. Certainly there are people who want to do that, for reasons I prefer not to discuss because this is the wrong forum. But there are many other people who want to ensure that their data do not become corrupted, who want to ensure the currency of their data, who want to make sure their data are used in the form originally released, who want to digitally sign their work as a statement of authorship, if not ownership, and who want to limit their liability for misuse of their data by others. These are all things that have universal benefit, even in a hypothetical market-free society where things of value, like GIS data, are offered at no cost to anyone.
The articles on vector steganography at directionsmag.com mention many of these applications. They illustrate, for example, how one could use steganography to embed metadata within the GIS features themselves, thereby making it difficult to lose the metadata. Maybe these articles are worth actually reading... :-)
--Bill Huber
PS: I removed the cc: to the ArcView lists because they are not set up to handle a discussion of this nature.
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