“Users use keys as accounts to trade, hold assets or just interact with blockchains, so control and security of those keys are important,” chief executive officer and co-founder Zhen Yu Young told TechCrunch. “Non-custodial wallets help you manage your key, spanning from solutions as simple as writing a phrase on a paper to more secure methods.”

https://techcrunch.com/2022/01/12/web3auth-secures-13m-to-drive-mass-adoption-of-web3-apps-and-wallets-through-non-custodial-authentication-infrastructure/