A rapid growth of smartphone devices in consumer
market is undeniable. However, this growth definitely comes with
causes. In terms of health, it has changed consumers’ daily life
behavior, as people tend to use more smartphones, and some of
them are considered as smartphone addicted. With people using
smartphones in longer period, this could easily become unhealthy
for them. The neck pain is one of the syndromes caused by the
prolonged use of the smartphones, as bad neck posture would
mean more weight is seen by the spine. To prevent and promote
better neck posture for smartphone users, we propose a system
to monitor, alert, and summarize the neck angle of the user while
using smartphone. The proposed system will monitor user’s neck
angle based on the combination of smartphone sensors and image
detection technique. Moreover, the system will provide alert to
the user if the position is in an unhealthy one for a certain period,
and also will provide the user with a summarization of the time
period. The experiment results of our proof of concept also had
shown that our algorithm was feasible. An average neck angle
determination in each setting was still within 5 degrees of the
actual neck angle and the standard deviation is lower than 4
degrees in all cases.