Yes, you can log in to Codility using Google.
To be able to use your Google account as a method of authentication, first, you need to connect it in:
My Account -> Settings -> Personal Settings:
Once it's done, you will be able to sign into Codility using your Google account without the need to provide your email address and password.
If you have any additional questions about logging options or would like to leave your feedback, please reach out to your Customer Success Manager or contact us at email@example.com.