How to logout pos from backend

[vennyisme]

The tablet I used as pos for my food stall was condemned, it just suddenly couldn't turn on and after checking was due to motherboard broken. I have no intention to repair that tablet and planning to get a new tablet to replace the previous pos. 

But system show I am still login in that old tablet, how can I log that out without having access to the old tablet since now that's gone.

[Wooders]

Login to back end on browser.

Go to cog icon

Select POS devices at bottom of menu

Select tick box for device you want to remove then click delete (bin icon).