I'm doing research on the effects of a stress reduction intervention on sleep and resting heart rate, and would like to collect objective biometric data from multiple participants using fitbits. I'd like to be able to do this using one computer rather than relying on participants' smartphones. I understand that there's a method I can pay for called fitabase, but I'm on a limited budget and was hoping to find something freely available. Does anyone know of a way to do this? Thanks.