We can’t decide if this is cool or creepy. But either way it’s an insight into the deepening connection between technology and relationships.

pplkpr (pronounced ‘people keeper’) is an app that connects to a Mio heart rate wristband and tracks how the people you spend time with make you feel. “This data is correlated,” says the pplkpr stie, “with the people you interact with to determine who should be auto-scheduled into your life and who should be removed.”

Check it out here.