• Make sure that your device’s display is set to 100% magnification, to ensure determination of correct screen size. Subsequently, pull out a standard credit card from your wallet and overlay it on the virtual credit card area being displayed on the screen.
  • Using the mouse, adjust the vertical and horizontal sliders until the image of the credit card on your screen is the same size as that of the actual credit card you are holding.
  • Your screen size appears at the bottom of your screen.