Finland has begun to introduce "Digital Travel Credentials" or DTC for air passengers, an alternative to traditional passport checks. The project -- aiming to speed up and offer more security to checks -- started in late August and is currently only available from Helsinki airport to certain test destinations in the UK. "The passenger just arrives there, looks at the camera, we make the facial comparison and matching" explains Mikko Vaisenen, a Finnish Border Guard inspector. IMAGES AND SOUNDBITES