In this week's Talking Tech feature, Poppy discusses how surgeons in the UK are implanting a new electronic chip to help patients with sleep apnoea, a condition affecting 8 million people that causes repeated breathing interruptions during sleep. The chip is placed on a nerve controlling tongue muscles, helping keep airways open. One of the first NHS procedures happened at University College London Hospitals, performed on Natalie Boller, who has suffered from the condition for 10 years.