Will a digital means of showing you’ve been immunised be the passport to living normal everyday life? Plus, what does China’s new law banning the export of goods deemed important for national security mean for Western tech giants? And we attend Web Summit - virtually - to consider whether the future of giant conferences is online. Presented by Rory Cellan-Jones, with BBC tech reporter Jane Wakefield. Produced by Jat Gill. (Image: A health worker processes a sample for a Covid test in New Delhi, India. Credit: EPA/ RAJAT GUPTA).