Father's Day thought: digital assets are only useful if someone can access them

[NiceNIC.COM]

Father's Day is coming up, and I was thinking about digital assets in a practical way.

Domains, websites, wallets, exchange accounts, hosting, email, and payment records can all matter. But they are only useful long-term if someone trusted can understand how to access and protect them.

I am not talking about sharing private keys carelessly. More about having a safe plan so important assets do not disappear if one person is unavailable.

What digital asset would you most want your family to understand and protect?