A couple weeks ago on BART, I found a Fitbit Alta on the floor. I showed it to the people around me, and everyone shrugged. The band looked like it had been chewed up by a dog, so that's how it fell off. I downloaded the app, but apparently there's no personal info stored in the device, so I kept it. It's a nice small device, and doesn't look half bad. I haven't had anyone comment on it yet, so it seems to have a low profile visibly.