Re: [OSM-legal-talk] License Use Case

2010-11-25 Thread Xavier Loiseau
Hi,

Does the ODbL license allow to add dummy data into a derivative database
in order to mask the personal data contained in this derivative database ?

Otherwise, is there any solution to protect the privacy while complying with 
the ODbL license ?

Thank you for your help.

Xavier


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Re: [OSM-legal-talk] License Use Case

2010-11-22 Thread Xavier Loiseau
Hi Frederik,



Thank you for your previous answers.

I sill have a couple of remarks and questions.



 1. You don't have to release what you haven't got. So if the only thing 
 required for your application to work is the *location* then just store the 
 location and not the address. You can still dump the address to a log file on 
 input, in case you need to follow things up manually later, but if the only 
 thing in your database is the location then that's all you have to release.

I think that having to publish locations (latitudes  longitudes) is equivalent 
to having to publish addresses
since a location can be converted into an address and vice versa.
Therefore, having to publish locations instead of addresses does not protect 
the privacy.



 2. I'm not sure if individual geocoding results really trigger any sort of 
 license reaction as they are so trivial. Maybe the application could be 
 structured in a way that would never even create/contain a substantial 
 extract of OSM.

I would rather have a solution not relying on the interpretation of the word 
substantial as defined in the ODbL license.
But briefly, how would you structure the application ?



 3. Assume your customers have uploaded 10.000 addresses and 10.000 pictures. 
 You could have one database with the columns picture_id and address, 
 containing what the users have uploaded, and another database with the 
 columns address, lat, lon which contains the geocoding results for 
 these 10.000 addresses. Now if you only mix these databases for display (i.e. 
 you do a SELECT from the geocoding table to find all addresses in the 
 vicinity, and JOIN that with the other table to find the photo IDs), then it 
 is my opinion that you'd only have to release the geocoding db and not the 
 photo db, as the photo table is not derived from OSM in any way. The 
 geocoding table would allow users to see which places you have photos for 
 (but you could add another 100.000 records to that table if you don't want 
 people to know for sure). Maybe you wouldn't even store the address in plain 
 text, but just a MD5 hash?

Does the ODbL license allow to add dummy data (for example the 100.000 dummy 
locations) into a derivative database 
in order to mask the useful data (for example the 10.000 useful locations) of 
the derivative database ?



Thank you very much for your help.



Xavier

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Re: [OSM-legal-talk] License Use Case

2010-11-21 Thread Xavier Loiseau
Hi,

Is the ODbL license compatible with privacy ?

Here is my current understanding:
- If the CC-BY-SA license is used, then there is not any privacy issue, since 
private addresses do not have to be published,
- If the ODbL license is used instead, then there is a privacy issue, since 
private addresses have to be published.

Is my understanding correct ? 

Or is there any solution complying with the ODbL license, without publishing 
private addresses ? 

Thank you very much for your help.

Xavier


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Re: [OSM-legal-talk] License Use Case

2010-11-16 Thread Xavier Loiseau
Hi Andrzej,



Thank you for your previous answer !



Case A

Let us suppose (as you mentioned) that the addresses are published.
I think that some users of the web site might consider that there is a privacy 
issue.
At least, I think that there is a privacy issue when a user provides his own 
address.



Case B

Let us suppose now (as you mentioned) that a piece of code is published instead 
of the addresses.
I understand from the 4.6 section (quoted below) of the ODbL that the addresses 
can be retrieved anyway.
Therefore, in any case  (A or B), I think that there is a privacy issue.


4.6 Access to Derivative Databases. If You Publicly Use a Derivative Database 
or a Produced Work from a Derivative Database, You must also offer to 
recipients of the Derivative Database or Produced Work a copy in a machine 
readable form of:
a. The entire Derivative Database; or
b. A file containing all of the alterations made to the Database or the method 
of making the alterations to the Database (such as an algorithm), including any 
additional Contents, that make up all the differences between the Database and 
the Derivative Database.




Summary

Here is my current understanding:
- If the CC-BY-SA license is used, then there is not any privacy issue since 
the addresses do not have to be published,
- If the ODbL license is used instead, then there is a privacy issue since the 
addresses have to be published.

Is my understanding correct ?

Or is there any solution to protect the privacy while complying with the ODbL 
license ?



Thank you very much for your help.



Xavier

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Re: [OSM-legal-talk] License Use Case

2010-11-07 Thread Xavier Loiseau
Hi Frederik,



Thank you very much for you previous answer !

(When you write picture ID, I presume that you mean an identifier of any kind 
used internally in the web server to identify a picture.)
(When you write location, I presume that you mean the latitude  longitude 
(not the address) where the picture has been taken.)



Let us suppose (as you mentioned) that the web server contains an OSM derived 
database
associating each picture identifier with the latitude  longitude where the 
picture has been taken.

Moreover, let us suppose that a user wants to keep private an address (and the 
latitude  longitude of the address) he provides:
- The user can still upload a picture through the web site to the web server, 
providing the address where the picture has been taken,
- But the user can also indicate through the web site that the address (and the 
latitude  longitude of the address) must not be published.

As a consequence, such users might not want the OSM derived database (described 
above) to be published.

Is there any solution to protect the privacy of such users while complying with 
the ODbL license ?




Thank you very much for your help.

Xavier


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[OSM-legal-talk] License Use Case

2010-11-04 Thread Xavier Loiseau
Hi,

Suppose that a web site can find and show touristic pictures which have been 
taken in a selected area:
- Users can upload pictures to the web server, indicating the address where 
each picture has been taken,
- Users can ask the web site to find and show the pictures which have been 
taken in the neighborhood of a provided address.

The web server internally uses OpenStreetMap data to find the pictures which 
have been taken in the neighborhood of a provided address.
Notice that the web site never displays any map but displays the found pictures 
and the address where each picture has been taken.

Do the pictures distributed through the web site have to be licensed under the 
CC-BY-SA license ?
Later, will the pictures distributed through the web site have to be licensed 
under the ODbL license ?

Thank you very much for your help.

Xavier


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