As with most merchants Roku places an authorization hold on your credit-card account for the approximate amount of any purchase you make. Similarly, if you place or update your billing information on file Roku will place an authorization hold on your credit-card account, usually in the amount of 1 USD, to verify your account information. These requests are not actual charges; but confirm that your credit-card account is active and has credit available for transactions. Authorization holds are removed by your financial institution shortly after your purchase clears. The amount of time it takes to remove authorization requests varies by financial institution.