https://techcrunch.com/2013/09/05/bitalino/

As the quantified self movement continues to pick up momentum, the range of consumer devices tracking physiological signals is set to expand. But harvesting bio-signals requires specialist kit — which can be either expensive to buy or tricky to put together yourself for prototyping purposes, unless that’s your particular area of expertise. Well, here’s a device that wants to change that. BITalino is a simplified system for makers, app developers and researchers who want to quickly start capturing bio-signals.