auto logout and only login from one device

Thoughts on best way to create this?

Need to have auto logout maybe on a time basis if account not used - can see this being useful for companies who might use dolphin internally also allowing staff to logon from home. 

Gives peace of mind that home staff dont stay logged in and allow others to access site info if site is private.

Also - login only from one device. Same as on Boonex.com

If I log in on my mobile, it auto logs me out on my desktop.

This is not standard feature on regular dolphin though!

any suggestions how to do these?

anyone else think this is a good idea?

there is some sens of an autop logout. If you notice here at boonex.com, when you login, the remember me is set for 1 week. So, I would guess the answer to your question would be YES. Now, where this code is at and what to change it to would be better answered by someone like deanos, zarcon, newton - one of those big wigs that know dolphin in and out.