How Your Phone Knows Touch

Iris Fennimore

Your finger taps the screen and the phone wakes up like it was waiting just for you. This is a clear, hands-on science story that follows electricity from your fingertip through hidden glass and grids all the way to the phone's remembering brain. Best for curious kids around seven to ten who take things apart to see how they tick. Duncan Winslow reads it like a patient older sibling walking you through a really good secret, with calm wonder and no talking down.