Every day, Jen Lowe renders a visualization with the most intimate of personal data—her heartbeat. She records her pulse with the Basis health-tracking wristwatch, then once a day uploads the information to onehumanheartbeat.com to replicate her heart, albeit on a 24-hour delay. The project is part of a larger trend toward live-updating visualizations that change in real time. A throbbing red light at the center shows her heartbeat. The outer ring counts down her (expected) days remaining on Earth.
This article was originally published in the November 2014 issue of Popular Science, under the title, “Dawn of the Data Age.”