Mobile Age will deliver two forms of innovation that can be used as the basis of future government service design and deployment in relation to mobile technology and the ageing population. The first is a process innovation in the form of a Best Practice Guide for Co-creation of Open Public Services based on open government data as well as mobile technology. The second is the Open Senior Citizen Public Service Engagement Platform (OSCPSEP) technological innovation. The process innovation will be conducted as a three stage process. Through studies of co-creation and co-design practices Mobile Age aims to realise the benefits of open government data and mobile technologies for the ageing population. We will develop a framework for service design for seniors, and describe this in our co-creation best practice guide, providing guidelines on how to involve senior citizens in co-creation and co-design events, and how to evaluate the outcomes of such activities. To realise the project’s technical innovations we will focus on the design of an Open Senior Citizen Public Service Engagement Platform (OSCPSEP) and personalised mobile service demonstrators, undertaking a senior citizen participatory design process. OSCPSEP will empower public service and data providers to understand and deliver new service interaction experiences for senior citizens. The OSCPSEP will offer platform-as-a-service (PaaS) and Software-as-aService (SaaS) capabilities to facilitate the enhancement and development of 3rd party mobile and web-based public services and provide a cloud-based framework for open public data providers to integrate new information services. In particular, the platform will aim to provide novel capabilities to interconnect heterogeneous public services to provide senior citizens with highly personalised end-to-end interaction experiences that combine disparate public services through usage analytics (i.e. interaction behaviours) and user context information (i.e. known disabilities) as a ‘digital glue’.