Framework for One Account Log-in From Multi Device On Mobile Application

Many applications require users to log-in, some applications can allow users to use the same account is active on multiple devices at the same time. On location-based application that serves to record the movement of the position, account is active on multiple devices could not be permitted because it causes a different location data from multiple devices, so the location of the users become ambiguous. This paper describes a simple protocol to prevent users from using their accounts on multiple devices at the same time. This Protocol will turn off one account on a device when the account log-in on new devices.