umm making an account

so i have a home computer, that i share with my family and i was goign to make an account, but states because my brother logged in, i cant log in. so...what i do now?

 

Use a proxy to make an account.

Once you've done so, make sure you and your brother don't interact market-wise (i.e. Bumping/Vouching for one another) or both accounts will be banned on the basis of Self Vouching/Bumping.