[IEEE 2018 15th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) - Chiang Rai, Thailand (2018.7.18-2018.7.21)] 2018 15th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) - Patient Aid Message Notification System Based on Hand Movement Tracking and Haar-like Features