Back in March, Switched On discussed a number of Kickstarter projects (all of which have now shipped) that extended sensor-based monitoring and notification to remote locations (provided there was WiFi or Bluetooth connectivity).

ENGADGET: Switched On: The fork, the ficus and the flandoodle

Bringing many of the popular emWave features to iOS devices, Inner Balance is the only app and sensor available that offers both real-time monitoring and training to manage stress and rebalance the mind and emotions whenever you need it.

ENGADGET: HeartMath unveils Inner Balance iOS app and sensor for managing stress, clearing the mind

Sensor technologies can be combined with mobile devices to deliver ongoing monitoring and tracking, as well as GPS location and emergency communications.

FORBES: Mobility Seeds The Cloud

There's plenty of sensor gear around for hobbyists to play with, but not so many polished products for the monitoring-obsessed.

ENGADGET: Wireless Sensor Tags alert you to movement and temperature changes, fit on your keyring