The Trojan Room coffee pot

The world's first webcam went online in 1993. Its camera was focused on a coffee pot so that computer scientists in Cambridge, in the UK, could see if there was any coffee available. Dr Quentin Stafford-Fraser, Martyn Johnson and Paul Jardetzky explained to Rebecca Kesby how they developed it. This programme is a rebroadcast (Photo: The Trojan Room coffee pot)