Q:
Friends family members
You can do anything, but it is not encouraged. Anybody beside you who knows how to gain access is a security risk. If you would return here to say “my brother did this, please turn it back” or “my friend was botting – not me, return the account to me”, you would be in problems, because it was your decision that made that happen.
Having said that, I’ll have to admit that I am a father and as such I would technically own an account but I would let control of it to my kids. In fact I did, but I bought additional accounts for them.
You do what you want to do. Technically the rules of conduct don’t allow account sharing. So you take the responsibility and if something is turning bad, you pay for it.
ArenaNet Communications Manager
Sharing accounts is a really bad idea. I’ve seen so many cases of this going bad, up to and including divorced couples fighting over an account, both being able to “prove” they are the “owners,” and our team being forced to close the account due to its disputed ownership. This has happened with friends, family members, and roommates, as well. I’ve seen accounts stripped by those same friends, family members, and roommates. Best items binned by a vengeful “Evil Little Brother.” And so forth.
The User Agreement prohibits account sharing except under specific circumstances. We can’t make it right if there are ugly repercussions, and as a player, I encourage you to not do it!
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet