Design (develop) @CC a NO-Code custodian vault

Hey folks, as a "digital sevy" DeFi contributor, NFTs passionate & Crypto play as lose... I have concerns about: How might could I find the right SOLUTION for my custodian-digital credentials {password, login & 2fa} for all my LONGTERM investments... because I buying when is cheap and waiting for growth revenue? Maybe, my kids one day gain my current "lose" investment... and how they get my digital inheritance?