You can apply for the Discover it® Student Cash Back credit card. But to get approved for it, you will need to provide proof of income and you should be a student so you should wait to apply for this card until the fall when you are enrolled in college. Once you have the card, you can get a cash advance through an ATM. To do this you will need a 4 digit PIN. Note that cash advances include high interest rates and you will also be charged a cash advance fee.
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All rates and fees, and other terms and conditions of the products mentioned in this article/post are actual as of the last update date but are subject to change. See the current products' Terms & Conditions on the issuing banks' websites.