Transcript Location Dependent Service and Privacy

Location Dependent Service
and Privacy
J-Phone East Co., Ltd.
Kentaro Meiseki
Atsushi Wada
Hiroshi Ohta
J-Phone East
Japanese
mobile telephone carrier
– NTT DoCoMo, KDDI and J-Phone
Develop
non-voice service
– J-Sky Walker (E-mail)
– J-Sky Web (WWW)
Start
J-Sky Station September 2000
– Location Dependent Push Service
– Use cell broadcast technology
J-Sky “Station”
Information
is sent to handset
periodically and stored
Information can be cell-unique so user
can receive location dependent
information
contents
provider
base station
handset
“Station” Contents
news
weather
restaurant
information
concert ticket information
game
described
by HTML subset language
can access web directly by clicking link
How it works
Use
cell broadcasting technology
Cell-unique information is stored in each
cell of a base station
Push the information and base station’s
position data to a user’s handset
periodically
Current privacy consideration
Basically
information is provided to
user “one-way” , so contents provider
cannot collect user’s profile
Contents provider may get user’s
location data when user respond to the
information
– click link or input message from form
Future
 Privacy
becomes more important, critical
issue as we are planning to develop more
user specific and interactive service using
stored location information
e.g.
– Scheduler
– Personalized advertisement
– Instant Messaging with Location
Information
Requirements (general)
Global
privacy consensus
familiar with XML as we are also
interested in XHTML technology
Simple and compact description
Less transaction
– wireless network is not broadband
Requirements (service aspect)
Easy
to view, accept/reject privacy
policies from handset
User unconscious location notification
for trusted web site
– cache or automatically send user’s
preference
P2P
privacy information exchange
framework
– handset to handset