With the popularity of smartphones, most people only use mobile phones to communicate, watch videos, and play games. Even if they are dating or having dinner, each person plays with their own mobile phone. The strength and weakness of the signal are used to maintain the closeness and distance of interpersonal relationships.Mainly promote the whole concept through posters, peripherals such as brooches, canvas bags, clothes, etc.The graphics are simple and can be extended to clothes and other materials for easier use and can be applied in batches.It is used in daily necessities and also spreads the whole concept incidentally.