Verification is a confirmation of a person's identity. Online casinos require newcomers to pass this procedure for several reasons. Firstly, to clarify their members’ age. If you are under 18, you have no right to gamble in Ireland. So casinos protect minors from gambling that can become addictive if a player doesn't set limits. Secondly, to stop fraud. It is usually used to launder proceeds. Fraudsters use credit/debit cards or their details without the owner's knowledge. Verification of the player's account prevents such operations. So casinos become safer thanks to verification.