Oh sorry—that's confusing. You'll actually have two accounts. One for the Cardiogram app using your choice of Facebook / Twitter / Email, and one for Health eHeart study (our partners at UCSF) using email.

When you sign up for mRhythm on health-eheartstudy.org, create a new account, and then you'll be guided through a few survey questions and have the ability to link your Cardiogram account with your Health eHeart account. That link is what lets us do the research.

Does that make more sense?