Sensor Enables Smart Diapers, Other Health Monitors

A new sensor could help workers in daycares, hospitals, and other settings provide more immediate care to their charges. The new sensor — so cheap and simple to produce that it can be hand drawn with a pencil onto paper treated with sodium chloride — could clear the way for wearable, self-powered health monitors for use not only in “smart diapers” but also to predict major health concerns like cardiac arrest and pneumonia.