android - How to implement multi device log in? -

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my app allows registered users log in.

my current implementation log in user, register sessionid on server's db , on mobile device itself. if these 2 match, authenticated , logged in.

however poses problem when user has multiple devices (iphone, android, tablets etc). because unless logged out previous session, server's db retain current session , prevent logging in other devices.

hope can share solution handle multi device log ins.


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