Why would someone use an ECG if they're not experiencing any symptoms? I've had an ECG twice in my life - as it turned out both times were a result of panic attacks. But I also have a family history of heart issues. Meanwhile I have a friend who suffers from AFib and this could be an invaluable tool for him.<p>I guess the bottom line is this isn't a toy, it's a medical device used to provide important diagnostics for potentially serious medical situations. I trust people would treat it as such.