My son (11) has started playing games using Steam, on Linux. It works great.

I've now got two other Linux machines set up for my daughters (7 and 9).

I'm not excited about purchasing the same games for each kid.

Can I use the same account on three computers independently? Or, would something like this script come in handy?

I don't want to run afoul of the Steam license. And, I feel it would be fair to let one kid play a game while the other kid isn't, on their own independent computer system.

Any advice here?