Cryptocurrency isn't something you can put in your safe. It is something that must be maintained online and secured with passwords.
source https://www.google.com/url?rct=j&sa=t&url=https://www.pe.com/2018/09/17/dont-lose-those-passwords-if-youre-passing-cryptocurrency-to-your-heirs/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNHWflqT2X1quUW2ZnOof1XPFrGs8w
