The new blockchain gaming will appear in all kinds of devices, mobile apps, VR and so on. Thus, users may not want to input their private keys everywhere.
With Player ID, users can connect all of their wallets in Web3Games portal and just login with email + password or ID private keys on any other devices. Player ID does not store any on-chain assets but just acts as a hub for all wallet accounts.
Game developers can allow Player ID to login and confirm the players' NFT ownership required for gaming by integrating the Web3Games protocol.