VIP Preferred is an eCheck (ACH) service made for the gaming industry. Its payment documentation describes enrollment with your name, date of birth, address, phone, email, a government ID (driver's license, state ID or military ID), your Social Security number and your bank account and routing numbers. Once enrolled, you get a VIP Preferred account number and a 7-day revolving ACH limit that works at participating gaming businesses in the VIP Preferred network.
When you pick VIP Preferred in a casino cashier, the service checks your enrollment and shows your available amount and linked bank account. You confirm the deposit and the casino receives a confirmation from the provider. If you are not enrolled yet, you are taken through enrollment first.
Withdrawals are handled as a separate process, and availability depends on each casino. Because it draws from your checking account, it sits under the ACH funding method that DGE rules allow.
It suits players who want a bank-based method with one sign-up across several sites. The limit is set by the service, not by you, so use your casino account's own deposit limits too.
Source: developer.kalixa.com