I think is common for online casinos to implement multi-factor authentication as one of their security measures to protect their players' accounts and prevent fraud. Multi-factor authentication typically requires the player to provide two or more pieces of identification or verification information, such as a password, a security question, or a biometric scan, to access their account or perform certain actions. While some players may find the additional steps inconvenient, most understand and appreciate the added security measures that protect their personal and financial information.