Over the past couple of decades or so, we've seen a lot of people exonerated via DNA evidence. We've seen a litany of scandals involving overburdened, inaccurate and even criminally inadequate crime labs across the nation. We've seen forensic evidence, once considered top-shelf, decline in reputation as its collection, processing, testing and results have all been shown to be subject to error -- or worse, shown to be flawed or invalid.
Suppose for the moment that you were the victim of a violent crime. Could you use evidence from your Fitbit (or another fitness tracker) to demonstrate that your heart rate spiked at the time of the incident? Now suppose you're the accused. Can the police use your Fitbit log or another Internet-connected app to prove what you were doing?