Ubiwhere aims to help people understand the impact of small gestures (such as the mobility options they take) on their communities through usable technology. One of the solutions is GoGreen, a digital rewarding mechanism based on Blockchain technology. Smart Contracts, based on Ethereum, enable rewarding mechanisms for end-users who opt for sustainable mobility options (transit, EVs, and other light modes of transportation). The system ensures transparency and trustworthiness between the different stakeholders.

After incentivising people to select sustainable transportation means, our main challenge relies on the lack of trustworthiness of the user-generated content regarding their location and transit because GPS/GNSS data can be spoofed. We aim to research innovative mechanisms to improve transparency and trustworthiness, to attest that the location of our end-users at certain times are factual so that they can retrieve the rewards from GoGreen. This proposal, named POSER, is developing a Dynamic Proof of Location scheme to validate transportation options taken by the commuters leveraging connected street furniture such as streetlight poles and bus stops.


Role: Leading the technical development and defining the architecture for POSER.

Beatriz Mendes
Role: Managing the team to ensure the allocation of resources and delivery of results on time.

Eduardo Santiago
Role: Research and development of dynamic proof of location algorithms and integration with the Helium network

Role: Integration of software components in Edge Computing architectures and devices.
Role: Leading the business development activities and adopting the outcomes into a product.

Blockchain experience

With a strong focus on developing innovative technological solutions for Telecom (5G) and Smart Cities, Ubiwhere aims to empower integrated urban management, having researched in the last 14 years around upgrading street furniture to become intelligent, connected, and sustainable. Ubiwhere’s City Nervous System offers the necessary technology to upgrade street furniture (such as lampposts, cabinets, or kiosks) with wireless, computing, networking, storage and administration capabilities turning it into neutral hosting and edge computing platforms for 5G deployment, implementation of IoT and EV Charging as well as data collection and analysis via open and standard interfaces. In this context, Ubiwhere has several past and ongoing R&D projects that include blockchain technology. One project is named GoGreen where gamification systems have been developed, combined with integrated rewards in cryptocurrency. Another project/product is the Thumbeo Corporate, which consists of an intelligent solution that digitises a company’s fleet of vehicles and uses Blockchain-based Smart Contracts and AI methods to create Digital Twins of the vehicles and ensure trustworthiness within fleet-sharing operations.