S1E5: Fitness Tracker | The Secret Genius of Modern Life

S1E1: Bank Card | The Secret Genius of Modern Life

Hannah Fry takes a look at the bank card, the digital key to accessing cash, and finds out how its extraordinary innovatio...

S1E2: Food Delivery App | The Secret Genius of Modern Life

Hannah Fry tucks into the tech behind food delivery apps, which are now used by 24 million people in the UK. Hanna...

S1E3: Virtual Assistant | The Secret Genius of Modern Life

Hannah Fry delves into the inner workings of virtual assistants, such as Amazon's Alexa, Google Assistant and Siri...

S1E4: Electric Car | The Secret Genius of Modern Life

Hannah Fry discovers why innovations in meat packing almost derailed the electric car revolution and how a breakthrough...

S1E5: Fitness Tracker | The Secret Genius of Modern Life

Hannah Fry finds out how 1970s car crashes helped us to count our steps, why WWII dog-fights led to a crucial health...

S1E6: Trainer | The Secret Genius of Modern Life

Hannah Fry visits eBay's authentication centre, where they are waging war against fake high-value trainers. She discovers ho...

S2E1: Passport | The Secret Genius of Modern Life

Hannah gains access to a top-secret site where anonymous staff and the latest tech work to make the British passport one of...

S2E2: Vacuum Cleaner | The Secret Genius of Modern Life

Hannah takes a look at the vacuum cleaner, going behind the scenes with Dyson and discovering how the motor in their ...

S2E3: Smartphone | The Secret Genius of Modern Life

With rare access to electronics giant Samsung, Hannah uncovers the technological game changers that have made the smartph...

S2E4: Microwave | The Secret Genius of Modern Life

Hannah Fry discovers the hidden WWII radar technology that heats up baked beans, learns the legend of the melted candy bar...

S2E5: Headphones | The Secret Genius of Modern Life

Headphones: these marvels of miniaturisation are worn by 30 million people in the UK. Hannah Fry visits Bose to find out ...

S2E6: Lift | The Secret Genius of Modern Life

Hannah goes behind the scenes to look at the technology behind the lift, entering a 246m high lift shaft to test everything fro...

S3E1: Air Fryer | The Secret Genius of Modern Life

Hannah takes a look at the air fryer - a device that is rapidly taking over people's kitchens, cooking up everything from ...

S3E2: Fridge | The Secret Genius of Modern Life

Hannah hits the production line with appliance giants Bosch to find the lifeblood at the heart of every fridge and gets a les...

S3E3: Rollercoaster | The Secret Genius of Modern Life

Hannah uncovers the wild origins of the modern-day rollercoaster and gets the inside story on the UK's newest, tallest...

S3E4: Doorbell | The Secret Genius of Modern Life

The rise of the smart doorbell is one of the great tech success stories of the 21st century. Hannah heads to Los Angeles to...

S3E5: Motorway | The Secret Genius of Modern Life

Hannah takes a drive to the National Highways control centre for the UK's busiest motorway to meet the team that keep the m...