I think the best way to detect theft of data is an old and proven one,
making certain (privately documented) mistakes on purpose, so you can
check if the map in question includes it. As most of you well know, it's
not possible to copyright reality, but fiction (erroneous data is
fiction) is copyrightable.
However, I'm not sure what's the consensus for introducing errors on
purpose?
For them to be effective, they should not be announced publicly, so I
guess each individual contributor would have to make a couple or
mistakes in their areas and keep them for themselves.
OR, for integrity, a few of us may sign up as "intentional mistake
database maintainers", where each contributor sends their the node/way
number or a special comment they made on their mistakes to a random
person on this list. This was, at least two people will know about each
mistake, but the security of the scheme is not compromised as nobody
knows about every mistake made.
Hehe, maybe I'm getting a bit too much secret agent here, but it *would*
work! :)
Ronny.
maning sambale wrote:
Out of simple curiosity, is there a way to detect that some of our
data was conflated into the navteq ph coverage? I believe navteq
contracted a local company to update Philippine data.
Looking at their maps, the road data for Metro Manila and surrounding area
seems good and somewhat up-to-date (though I can easily spot several
out-of-date portions). For instance they barely pass my Bonifacio Global
City test but fail the C-5 extension test. Coastline data is pretty bad, on
the other hand.
In terms of coverage, I think they can match Google's Map Maker data.
Is navteq's data similiar to G's MMaker outside Metro Manila?
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