1. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Jukka Nikulainen Project Co-ordinator City of Turku (Finland), Surveying and Land Department GIS fusion with new technologies: The Challenges for Privacy Protection and Data Security GOOD MORNING!!

2. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 The Interactive Well-Being WebMap Project City of Turku, Finland (Coordinator) European Dynamics S.A., Greece Gwent Health Authority, Wales Municipal Development Enterprise of Patras, Greece Torfaen County Borough Coucil, Wales Small Area Health Research Unit, Ireland

3. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Protecting privacy and improving data security Access Policy Limiting the Quality of Data Summary presentation Methods Acceptable level of privacy protection and data security

4. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Access policy: The principle of access level User groups with user IDs and user authorisation User groups with user IDs and user authorisation Free access Free access Access level 1 Access level 2 Access level 3 Service Browsing map presentations Normal Internet user Normal Internet user User- group 1 User- group 1 User- groups 2 - n User- groups 2 - n

5. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Extranet user Internet user The IWWM SERVER The IWWM SERVER The IWWM SERVER The IWWM SERVER Intranet user “Virtual” Databases (wide) “Virtual” Databases (restricted) “FIREWALL” Access policy: Data security

6. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Limiting the data quality Privacy protection and data security in acceptable level. -How about the analytical and visual power?

7. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Summary presentation method Coordinate based mapping In Finland the position of the buildings is measured to an accuracy of one to ten metres Population census data with personal identity code and information on the houses where people live Medical registers with personal identity code Phenomena (eg diseases) with coordinates

8. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Coordinate based mapping Summary presentation method All information is positioned into a matrix of pixels or cells (500 x 500 m, 1000 x 1000 m etc.) Neighbourhood analysis = The value of a pixel is depending on the number of cases and inhabitants in the pixel and surroundings The variable size sample areas have the same amount of population or expected value Sample areas

9. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Coordinate based mapping: Example Physical exercise at least twice in a week: Red cells represent areas where amount of inhabitants who exercise at least twice in a week is above the average

10. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Coordinate based mapping: Example Overweight Index over 30: Red cells represent areas where amount of inhabitants with overweight index over 30 is above the average

11. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Coordinate based mapping Advantages: Data Security in acceptable level Privacy protection in acceptable level ? Controlled statistical behaviour Identification of phenomena Disadvantages: Requires a good (spatial) standard of databases Random effects are possible The map is only a reflection of (possible) phenomena, not a presentation based on true values

12. INTERACTIVE WELL- BEING WEBMAP PROJECT CITY OF TURKU FINLAND 5th EC-GIS Workshop, "GIS OF TOMORROW" Stresa, Italy, 28 - 30 June 1999 Jukka Nikulainen / 29.6.1999 Conclusions Separated services for the Intranet and Internet (+ Extranet) users Access control does not guarantee privacy protection and data security On-line access to the databases is an excluded option All personal information must be removed from the databases used in the service The conversion procedure (linking together geometrical and attribute data and removing personal data) must be separated from the service Legal and ethical issues must be studied carefully NO MISTAKES!! Thank You!! GIS & Internet technology: