In terms of the physical appearance of the
device, several participants noted that it was
difficult to determine whether the device was
powered on when it went into standby mode.
Indeed, this has been a challenge for the project
team to solve, because keeping the backlight of
the PMD turned on quickly drains the phone’s
battery. As a compromise, the revised version of
the PMD activates the PMD backlight prior to
the notification of a new reminder in order to
attract user attention to the device. Additionally,
the default screensaver provided by the
phone manufacturers is activated, displaying a
simple animation to indicate that the device remains
powered on.