The Face-2-Face (F2F) project uses facial perception techniques developed by university partners. It analyses the facial expressions of the users, as well as the environmental sensor data (like light intensity). By doing so, you can adjust how much sunlight passes through specialized windows (switchable glazing) on the fly.

This creates a space that reacts to people’s emotions, making it more interactive, personalized, and energy-efficient. For instance, see what happens if you smile!

How did this work come into existence?

New building technologies allow exciting and useful interactions between people and buildings. For instance, they can help save energy in buildings and create personalized indoor environments. However, the main problem is that we don’t have easy-to-use interfaces and control systems for these technologies. If we can make them respond to people’s needs right away, it would prevent frustration and dissatisfaction among residents.

See what happens to the transparency of the glass when you change your facial expression

Theater de Veste

About Architectural Facades & Products Research Group

Alessandra Luna Navarro is an assistant professor in Façade Design and Engineering at TU Delft and a chartered engineer in Italy and the UK. She has obtained a PhD from the University of Cambridge by researching occupant-centred design and operation of facades. She collaborates with regional energy policymakers, the International Energy Agency, the CIE and CIBSE in linking evidence and innovation to policy.

Pedro de la Barra is an architect passionate about sustainable design. He was a research assistant, developing dynamic façade solutions, coordinating laboratory assessment campaigns, implementing monitoring systems, and developing automation for indoor environmental control, focusing on thermal and visual aspects. Currently, I am pursuing my Ph.D. in Architectural Technology.

Pablo Martinez Alcaraz is a PhD candidate in Architectural Technology at TU Delft. He pursued his studies in energy engineering, gaining experience in research and policy development. Along the way, he developed a strong understanding of human relationships with the built environment. Currently, his research focuses on how human behaviour can be identified and predicted in buildings to improve their comfort and energy efficiency.