Capacative Sensing Technology

If you want to avoid becoming dangerously dehydrated, you have to drink before you start feeling thirsty. So, how do you know when to do so? According to a new study, a simple tap of your smartphone screen may soon provide the answer.

When we hear about smartphones being used to perform analytical tasks, there's often also a device that's connected to the phone. According to a new study, though, a phone's own touchscreen could soon be used to test drinking water and other liquids.