Kt Corporation

Ki-Hwan Ahn

Young-Bin Cho

Yong-Joo Park

Myung-Eun Kwon

Yeon-Joo Son

Described embodiments provide managing data collected from machine 2 machine (M2M) devices. A plurality of M2M devices may be grouped based on a common interest and the same group authorization key may be assigned to M2M devices in the same device group. A data collecting terminal having a group authorization key may be allowed to collect data in M2M devices when the M2M devices have the same group authorization key.

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Seoul, South Korea

Ki-Hwan Ahn