What if I open a study on the wrong device?

Each study is taken on a phone, a laptop, or either. The study details say which, under Join from.

• On a laptop for a phone study: scan the code on screen with your phone’s camera, then tap Continue as your name. You’re signed in there and the study opens. Can’t scan? Choose Send on WhatsApp or Email me the link.
• On a phone for a laptop study: choose Email me the link or Copy link, then open it on your laptop or desktop computer.

The code and the link sign you in, so they work once and only for 10 minutes. Never share them.