The commentary by Chad McDonald, VP of Customer Experience at Arxan, now part of Digital.ai, on the NHS privacy outlines for the new Coronavirus contact tracing app and whether our data really will be secure: "Keeping the data on the user's device certainly affords the user more personal control over their data. That said Bluetooth isn't the most secure means to transmit data. Just last year a major vulnerability was announced that facilitated interception of Bluetooth data by attackers. . (...) - Opinion