In this study, smart chair cover for modern posture correction is made by using more than 30 pressure sensors and the experiment is carried out in seven representative positions. It recognizes the postures through the pressure sensor, informs the user of the posture in real time, and accurately discerns the proper posture from the wrong by deep learning. In addition, the statistical data is visualized in the system, and when the ratio of improper posture is too high, the system informs the user of the possible danger of the improper posture and influence the user to correct the posture through stretching routine.

Worldwide, 34 million children under the age of 15 suffer from hearing problems, and about 100 million young people are exposed to the risk of hearing major damage as they use unsafe personal audio devices such as smart phones for long periods of time or regularly attend noisy environments such as clubs, sporting events and concerts. In this paper, we discuss Speech-to-Text (STT) and Text-to-Speech (TTS) services which are core technology of our hearing support system. We also present architecture of hearing support system.

As the number of single-person households increased, the difficulties and worries of single-person households are becoming big issues of our society. In order to protect single-person households, we are proposing a household security system. This household security system needs communication services to exchange photos, videos, voice, and text with visitor. For smooth communication between the Raspberry Pi and the smart phone, a total of two communication services, Bluetooth and Wi-Fi. We also present development environment of our system.