Tech maven Steve Caplin loves LEDs but even he is aghast at plans to build the world's biggest LED screen in East London. He's alarmed by a sleep app that dispenses CO2 to help you nod off. The largest scooter factory in the world is to be built in India, but will the batteries be as good as promised? There's also a "pedestrian shield" for electric scooters, Historic England's (hard to use) online map, a pocket touchpad that could help find things on TV, a folding kayak and a "breathing" cushion designed to reduce anxiety if hugged.
