Skip nav to main content. Contact & Locations English Mobile App Login Search Menu Debit CardNav Take control of your card This free app helps you manage spending and security for your OAS FCU card. Download Now Available in these Regions GET IN TOUCH Available What is CardNav? CardNav is card monitoring app we encourage all of our members to download. It is easy to install on your mobile device, and it is free. With CardNav, you can manage your debit cards in one place, for both budget and security reasons. You have complete freedom to choose how and when your card is used. For example, you can set geographic limits on your card, or restrict the amount of money that can be spent. Real-time purchase alerts mean you can even stop unwanted purchases before they are complete. Turning your card off or on is as simple as pressing a button. You can also use the app to find free ATMs or CO-OP shared branches where you can make OAS FCU transactions. Check balances and make transfers Find the nearest CO-OP shared branch or ATM Turn your card on or off in seconds Set specific spending limits Get security alerts for purchase location, amount, and more How to use CardNav Questions Fees Take control of your card This free app helps you manage spending and security for your OAS FCU card. Download Now Related Resources Pay a friend or family member in seconds! With our P2P service, you can send money to anyone via email or text, rather than having to worry about sharing your account number. Learn more Traveling? Let us know If you're traveling, be sure to fill out the debit card travel notice via online banking. Log into online banking Contact About Routing Number Accessibility Privacy Notice Equal Housing Lender NMLS #417490 © 2018 OAS Federal Credit Union All Rights Reserved Federally Insured up to $250,000 by NCUA © 2021 OAS Federal Credit Union All Rights Reserved Follow on Facebook Follow us on Twitter Accessibility