| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication device system, communication device system notification method, and communication device system notification program that allow a plurality of communication devices to monitor a communication device which is a monitoring object, and can track monitoring depending on the mobile environment of the communication device.SOLUTION: A communication device system 10 is composed of a first communication device 20, a second communication device 30, and a third communication device 40. The first communication device 20 comprises a control unit 21, a first communication unit 22, a second communication unit 23, a storage unit 24, a notification determination unit 25, and a notification unit 26. The second communication device 30 comprises a first communication unit 31 and a second communication unit 32. The third communication device 40 comprises a first communication unit 41. The first communication device 20 and the second communication device 30 have a monitoring area where the third communication device 40 is monitored, and generate a notification signal and give notice if the third communication device 40 is out of the monitoring area of both devices. |
