Message signature is implemented by encrypting the message with a private key, it allows users to verify the owner of an address. You can set a message signature on CoinEx Wallet through the following tutorial, and others can verify whether the address belongs to you through your signed message.
Step 1: Select "Advanced Features" from "Me".
Step 2: Choose "Message Signature".
Step 3: Currently, multiple cryptos are supported for the feature, here take CET as an example.
Step 4: Enter a message you want to sign and tap the "Submit" button.
Step 5: Enter the password for security verification, then the message signature will be generated. Copy the corresponding message to others to verify that the address belongs to you.