Alasdair Keane visits the Barcelona Supercomputing Centre, where scientists are creating a digital version of the human heart with the aim of improving predictive and preventative medicine. Also, Lara Lewington explores how technology is playing a role in developing new vaccines.

The Click team is in Barcelona to check out the latest tech innovations at the Mobile World Congress. Plus, how deepfake technology is raising concerns in the world of politics during a major global election year.