When registering at an online casino, you’ll typically need to provide personal details like your full name, date of birth, email address, and residential address. Some casinos may ask for phone numbers or payment details, especially if you plan to make deposits and withdrawals. It's crucial to make sure the casino is reputable and secure, as this ensures your data will be protected. A trustworthy platform, with clear terms and conditions, can offer you a great experience and even potentially lead to heaps of wins. Be sure to double-check the security features of the casino before signing up.