Light-Gramophone For the Loner

In order to help the elderly speak and call on everyone to pay attention to them, we have set up Light-Gramophone For the Loner. They are still alive, but their voices are not heard, and even their existence will be gradually forgotten. The device is a light ball of equal size. When the old man’s words are recorded into the light ball, the volume of the ball decreases, settles, and emits light to attract strangers to stay. When the sensor senses that a stranger stays under the ball, it starts to play the sound. Every time the sound is heard, the volume of the light ball increases. Every passer-by may have an old man living alone at home. If he wants, he can go under the light ball and listen to the sound from the other end of the Light-Gramophone.