Remote steam log out?

[1995 toyota corolla]

I logged into steam on a public gaming computer. Can i remotely log out of it using my mobilr device??

[wuddih]

in app
left swipe -> store -> account details -> manage steam guard -> deauthorize all other devices.

[我的世界]

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[Kokonut_Binks]

I can't open any of my games because it says I'm in a game on another computer (which is pretty likely). I've deauthorized all other accounts and even changed my password, but the problem still remains. The game open is Magic Duels