I just got this question in my mind. What will happen if no one knows about the pasword of his/her acount will it posibly deduct to the main supply of bitcoin? Example bitcoin was 21million supply and one man got 1 million bitcoin he was holding and suddenly he died no one can open his wallet is it posible that the remaining 20 million bitcoin forever?
Unfortunately, I don't think the bitcoins can still be accessed or used hence they are lost until somehow the private keys are retrieved. But if you have someone to trust with your accounts and information, then you don't have to worry about this case of locked bitcoin. Though it will be hard to trust people sometimes, it will be good and practical to have someone to watch your back in this industry to make you sure your efforts won't go to waste.