Current authentication approaches: secret knowledge, tokens and biometrics, all fail to provide universally strong authentication - with various well-documented failings. Prof. Nathan Clarke discusses research that has been undertaken at Plymouth to develop a new approach that seeks to minimise the burden placed upon users, yet improves the level of security currently being provided. The talk was delivered at Plymouth University on 2 December 2015. [(CC) BY-NC-SA 2.0 UK]