That is a good idea. But we could go so people could use the same key, BUT could change the name at the same time and keep it like that, and each has its own password. Like so
NickTheSushi 227
NoahCaek 227
Select plox :D
* * * * * * * * *
*clicks NickTheSushi*
Password: **********
*hits enter*
Welcome, NickTheSushi! :D
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And the same key could be used on different computers.