Steve Caplin delves into the world of tech. Sitting in traffic really does raise your blood pressure, it transpires. A wearable stethosope is being developed, as is a pill that can track your vital signs. Curtains could prove the answer to stopping superbugs being transmitted in hospitals. DAB is being phased out in favour of DAB+ and users need to be careful about buying second-hand radios. Kodak are producing a bizarre camera using Super 8 film. The Swiss have developed a machine for creating giant stone walls. Deliveroo are to add electronics then Screwfix and Boots to the things they'll bring. And the first disabled astronaut may be grounded beause his prosthetic leg could poison the air on the International Space Station.