What if sir one of your brother or frien died, then they got a 0.73722 bitcoin somthing how can I get that money from her account with out he's password or private key.
There is no way you will be able to get access to the account and it is indeed one hell of lose because it going to sit in that account forever that's why to prevent any thing like this we must put measures in place to leave our bitcoins to thise we want.