Doorbell: The Secret Genius of Modern Life

BBC Two Northern Ireland HD

8:00 AM to 9:00 AM

Tuesday 6 May

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Hannah Fry takes a look at the rise of the doorbell, heading to Los Angeles to get the low-down on the ding-dong from market leaders Ring. She delves into the history of the device and discovers how a garage tinkerer who played with sharks, some Soviet spy tech, and a student desperate for a drink led to the technological phenomenon that is the smart doorbell