Genshin Impact hides signatures so you don’t need to see your friends’ signatures. The method of hiding the signature of Genshin Impact from seeing the signatures of friends is as follows:

1. Adjust the privacy option of personal information in the game settings and turn it on, so that you will not be able to see other people's signatures.

2. Click the edit button in the upper right corner of the business card.

3. Turn off the button behind Sync Game Data.