How can we citizens maximize the benefits of the new right to data portability, which is now rapidly being recognized globally?
Personal Data Store is a technology that will receive all “My Data” from hundreds of services. It aggregates and integrates them, and at times discloses a portion of them to others under user’s control for creating new values.
This talk will introduce an open-source Personal Data Store (PDS) server “Personium”, providing details on its technical implementation, the underpinning business models, and the actual implemented and future use cases.
Personium - Open Source PDS envisioning the Web of MyData
Open Source PDS envisioning
the Web of MyData
Project Lead - Personium Project
Member – Open Knowledge Japan
Manager – Service Technology Unit, Fujitsu Ltd.
MyData 2018 – Tools for Data Portability
“Data Portability” encouraging MyData
With “Data Portability”, MyData is now out from enclosure,
in a machine readable way.
Now, Question is
Who / What Entity, What kind of Machine should
receive these ported data.
Where is the best place to put the ported data.
Invisible ball floating above your head
You can put whatever your data into that ball.
All your data is there.
I know all my data
about me can be
Helps your life in all aspects
Never betrays you.
Just like your Car augments
your ability of mobility.
augments your ability of
Create such an Information TechnologyOur Project Goal #1
PDS – “MyData” Storage
“ Where is the best place for MyData, now getting available by data portability ?”
Why Server ?
24 hrs / 365 days Up,
Accessible from any device / service
Easy to put Intelligence (computing power)
Why a choice of entities trusted ?
It varies depending on your belief.
We like democracy rather that despotism
“My Own Server operated by a choice of entities I trust.”
World Wide Web of interconnected PDS’s
Various PDS Providers (Information Bank) can co-exist and co-prosper
Interoperable among PDS providers using Personium or compatible software
Various PDS Providers
regardless of PDS
Can use Same Apps
Can communicate and
share data with
People who use a
PDS from other provider
Consumers can choose a provider
Interoperability among providers should be there
Provide it in the form that many players can co-exist and co-prosperOur Project Goal #2
Open source: Anyone can be a PDS Provider
Currently developed by our team in Fujitsu.
Aiming for open and neutral project management
Available on github
Apache License version 2.0.
Tools, samples are also available
Anyone can set up a PDS server, and become a PDS provider.
Business entity, national / local government, individual, etc.
Free, Secure, Public
Aiming to be an “Apache” in MyData Domain
1.Accessibility from variety of Apps
All functions provided in the form of Web API
Each Personium PDS has a unique URL
Any platform (OS, language) can speak with Personium
All API’s are protected with user authentication and access control.
Well known standards used for data access
WebDAV for directory tree file system model data
OData for relational model data
Decently isolated to avoid unintentional mix-up
app authentication for protection against phishing apps
Packaged data model including ACL, Roles, relational data
schema, etc.. can be provided from app and installed onto
Personium upon first use
Apps Per-App spaces
Web API standards
For Relational Data
2.Linking for sharing MyData
Sharing MyData by pointing target PDS URL
Disclosing or sharing your data to the others (e.g. wife, family doctor, work
place, etc.) are done by specifying the other party's PDS URL.
PDS access uses digital signature technology, therefore, the other party's
PDS can be resided on another server.
Passive Data Subject
Full privilege delegation enables Passive Data Subject
By granting all privileges on all resources to someone else, full delegation
can also be configured in the continuum of Personium access control model.
Data from / of infants, pets, cars, communities, organizations can be handled
using Personium (MyData can be disclosed to organizations or apps)
My doctor My patient
I will show my diet
log and exercise log
only to my doctor
Active Data Subject Passive Data Subject
Allow parents all data
My son My dad
I will manage it until
he grows up
Web of 3-layer structure over HTTP (REST APIs)
Name Description Typical URL
Unit The server to host Cells. What you get by software installation. https://pds.example/
Cell “Personium” Data Store for “everything” https://akio-shimono.pds.example/
Box Per- App space inside a cell. https://akio-shimono.pds.example/schedule/
■ Cells can be networked beyond units.
■ A Box provides a separate space dedicated to each application.
Security : All SSL, Authn/ Authz, Access Control
3 types of clients call corresponding level of APIs
Unit Mgt Client
Application ClientCell Mgt Client
storing and utilizing
RESTful API standards
For Relational Data
Other features of Personium Cell
Between cells to send request each other (Relation building, Data
disclosure, etc.. )
Rule based event handler + Pub-sub WebSocket interface
Sandboxed custom logic execution environment to implement “intelligence”
Extensibility of User Authentication Methods
Open ID Connect / SAML / Card …
Our final goal
Web of “MyData”
Every active / passive data subject’s MyData store connected with each other
World Wide Web of PDS’s can be formed if everybody is happy to use one.
Our logo represents our dream of
World Wide Personium (MyData) Web
Cyber Physical System will be formed
Key: App Ecosystem
User Satisfaction parameters
Richness of Data providing Apps, which sync ported data to the PDS
Richness of Data consuming Apps, which utilize the data in PDS and provide new values.
Recommend an event tailored to your
preference during the free time of your
Expert advices based on your daily
Proposal of travel tailored to your
financial status, preferences and
Job offering according to your skills,
qualifications, practical experiences etc.
Data Consuming AppsData Providing Apps
As data grow,
app ecosystem and user base grow.
As app ecosystem grows,
user base and data grow
Data Portability Demo
using our sample GUI + Calendar App
1. Calendar Data synced near-real-time to Personium
from multiple major source services
2. Merged and integrated
3. Shared with others upon user’s control
You can freely modify and customize them for your
needs. (e.g. Put your logo and redistribute under
PDS Provider (Information Bank)
Several projects under development. Many big companies interested.
Financial Institution, public sector, energy company, Media, etc.
They all have individual ”paid” accounts and have strong interest in adding extra
value on them.
They do not have to earn immediate money with this, rather engagement.
Cloud Service, System Integration, etc.
Last Words: Join Us !
Visit our web page and join our slack community
About 100 members in the community.
Current majority is Fujitsu Group Employees in Japan
We want more diversity !!
We want more apps.
We want more servers.
Our software is still far from maturity.