Presumably, the crypto market is going mainstream, and this will probably include more general users, that do not know much of block-chain and crypto-currencies, or they are not willing to learn about crypto-currencies to be able to use the platform, their intention is to have a service similar to current system with username and password, instead of public and private key, consisted of long hexadecimal codes, that are hard to store and remember
i do not think that this is the best way to interact with block-chain, and i do think that holding your private key is the best way to store your funds, but for a general user, it is too complicated, and they would not even start to use the service, until it is more user-friendly
Here i will sum up four wallet alternatives, that let you use the block-chain, with username and password log-in option, and optional 2FA authentification
1. TORUS website -
https://tor.us/sign-up options - google, facebook, twitter, discord account and almost all social network accounts available, image below
supported crypto-currencies - ETH, Collectibles ERC-721
2. FORTMATIC - now MAGIC
website -
https://fortmatic.com/sign-up options - e-mail or phone number, with PIN-code and 2FA authentification
supported crypto-currencies - ETH and all ERC-20/ERC-721 tokens
3. PORTISwebsite -
https://portis.io/sign-up options - e-mail
supported crypto-currencies - BTC, ETH, POA, RSK, xDAI, EOS
4. AUTHEREUMwebsite -
https://authereum.com/signupsign-up options - e-mail
supported crypto-currencies - ETH, ERC-20
Authereum requires users to claim - auth.eth domain, and during registration one have to pay a fee for registration