AdvicyDrive monitors heart rate while driving to tell how awake you are . If it causes a drop in heart rate , which suggests you 're dozing off , it sounds an alarm on a connected smartphone . It uses digital photoplethysmography ( CT ) to track changes in blood flow . sensors can be fitted to a wrist but can also clip to a person 's underwear . Clip is under development and is available to pre - order from retailers .
AdvicyDrive monitors heart rate while driving to tell how awake you are . If it detects a drop in heart rate , which suggests you 're dozing off , it sounds an alarm on a connected smartphone . It uses digital photoplethysmography ( PPG ) to track changes in blood flow . Sensor can be fitted to a wrist but will also clip to a person 's underwear . Clip is under development and is available to pre-order from Kickstarter .