1st Security Bank of Washington Mobile, Putting the power of your bank in the palm of your hand. Your bank built to go! Deposit Checks - NEW FEATURE! Check your balance instantly. View recent account activity. Transfer money between your 1st Security accounts. Use Bill Pay to make sure you never miss a payment. Find the nearest branch or surcharge free ATM ...and more! *Must have online banking service and password to access account information via 1ST SECURITY Mobile. To learn how we protect your privacy, please visit https://www.fsbwa.com/about_us/security_and_privacy