  In this work, we present EvoK, a new way of sharing one's heart rate with
feedback from their close contacts to alleviate social isolation and
loneliness. EvoK consists of a pair of wearable prototype devices (i.e., sender
and receiver). The sender is designed as a headband enabling continuous sensing
of heart rate with aesthetic designs to maximize social acceptance. The
receiver is designed as a wristwatch enabling unobtrusive receiving of the
loved one's continuous heart rate with multi-modal notification systems.
