[hananova]

First: Imagine a situation that won’t happen. A teenager without a steam account?

Second: They could easily allow any account to log in as long as the account that bought it is an actively logged in profile.

[BlueTemplar]

If you think that 'teenager' is too old (which I am skeptical about, considering the current popularity of Roblox), replace by 'kid'.

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More complications, more points of failure.