# How to log in with 4-digit CID
***Find the Aptos address you used to lease your 4-digit CID***
***Export the mnemonic or private key corresponding to the Aptos address, and you can find the 4-digit CID to log in to ComingChat***
**Open ComingChat,** if you are logging in, please log out first, 4-digit CID does not support \[Switch Account] now.
***Because you are the owner of a 4-digit CID, you can open a chat with GPTBot***
***You can go to your wallet and check your 4-digit CID under the Aptos network***
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