Eight years since launch, Valencell has its biometric-tracking sensors in wearable devices around the world. Now with $13 million in venture capital funding—$7 million of that raised in June—the company plans more growth into the military, digital health and gaming sectors. And its quickly becoming an expert in
sensors for 'hearables', or devices that measure heart rate and other biometrics in the ear. Here's a recent VentureBeat story on the trend.