The TTP226 is a touchpad detector IC which offers 8 touch key.
The touching detection IC is designed for replacing the traditional direct button key with a diverse pad size.
Capacitive touch allows electronics to sense when your finger is within a few millimetres of a surface to simulate a button “press” just like how the pushbutton works.
Capacitive sensing may be used in any place where low to no force human touch sensing is desirable.