Why water droplets confuse your smartphone touch screen?

Why water droplets confuse your smartphone touch screen?

Read till the end for complete understanding

Let's start

Touch screen locate your finger on the grid by measuring, how much the charge drops between two intersecting electrodes a process called "mutual capacitance".

The problem is that drop of sweet or rain can reduce the charge too by providing another conduct between the electrodes. Thankfully over the past years, touch screen engineers have solved the water problem by drawing on different mode of touch sensing called "self capacitance".


Instead of measuring of charge across pairs of electrode, the touch screen measures the increase in charge between an individual electrode on the screen and the ground you are standing on.
Because water droplets are not ground the phone's firmware is better able to ignore them.


So we can say that it is also fully not successful because it won't work during multipoint touch operations like pinch, zoom, etc.

So guys this was an article I hope this would be helpful.
 
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