Can technology improve our health and transform healthcare? A whole panoply of tech companies are working on a range of products and services which aim to answer these questions in the affirmative. The burgeoning industry which has been dubbed “medtech” has already led to some fascinating (and controversial) partnerships, perhaps most notably involving Google Deepmind being granted access to NHS patient data. It has been estimated that the medical device and technology sector could be worth around $500 billion to the global economy by 2021. But despite the potential for healthy growth, there are also many concerns associated with medtech, not least in terms of data protection. These are discussed below, including a section on how health data is being used in the fight against coronavirus.