These individually controllable pads are used to display
information about the phone’s current state. When the phone is
ringing, all of the pads blink on and off. If a call is accepted, the
lights rotate in a circle until the user hangs up. When the phone is
idle, the shirt generates random patterns. The shirt can also be
used as an ambient display for phone battery state. In this mode,
each pad corresponds to 10% of the current battery capacity.