Sharing devices with Chess.com members
Yes — Family members, siblings, friends, and others can play on Chess.com from the same device or location (IP address) as long as they follow these two simple rules:
Each person must have and use their own account — no account sharing allowed.
All games between players using the same location must be unrated.
For example, if you and your brother are playing on Chess.com in the same room—you on a computer and he on his phone—you should only play unrated games against each other.
You can read our community policies here: Community Policy