A Context-aware Distributed Social Networking Framework
i3B (Valencia, Spain)
Human Computer Interfaces
Grant Number
Teknologian Tutkimuskeskus Vtt Oy
Atos Spain Sa Atos Spain
Ethniko Kentro Erevnas Kai Technologikis Anaptyxis
Grassroots Arts And Research Ug (Haftungsbeschrankt)
Istituto Superiore Marioboella Sulle Tecnologie Dell’informazione E Delle Telecomunicazioni Associazione
Nagoon Ab
Swiss Txt Ag Swiss
The Provost, Fellows, Foundation Scholars & The Other Members Of Board Of The College Of The Holy & Undivided Trinity Of Queen Elizabeth
Universita Di Pisa
Universitat Autonoma De Barcelona
Universitat Politecnica De Valencia
Universitat Passau Uni
Helsingin Yliopisto
Worldline Iberia Sa

HELIOS will develop, implement and validate a decentralized social media platform that will address the dynamic nature of human communications in three dimensions: contextual, spatial and temporal. Technically, this platform is an extension for mobile operating systems (first Android), providing easy-to-apply peer-to-peer social media functionality for 3rd party developers. HELIOS will be built in a modular and extensible manner, by enabling all features characterizing social media today and growing beyond.

Trustworthy communications

HELIOS will introduce novel concepts for social graph creation and management, which are grounded in trust. It will design, implement and validate a state-of-the-art, decentralized p2p social media platform which will:

Support the ad-hoc creation and management of social graphs within the context and proximity of the user.
Provide all necessary means and features which will entitle it to represent true trust-by-design, including among others novel decentralization, content creation and sharing.
Ensure the highest level of privacy complying with all the necessary ethical and legal requirements. The concept will be validated in different open and closed environments with citizens across a range of demographics and within different contexts.

Egocentric contextual networks

We see our own networks from egocentric perspective: at work our social network comprises our colleagues and associates, and we seldom think any further than that. In HELIOS terminology, we ourselves are ‘Egos’, while the people we are connected to are our ‘Alters’. However, each of us has more than one network, as we have different networks at work, at home and in hobbies: All our social networks are contextual, and the contextual networks stack one upon another. In HELIOS, the platform automatically maintains this contextsocial information, important for online communications. Data remains within each context and does not leak to other networks.


This project has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under Grant Agreement Nº 825585