Lawrence Palmer, With your Smart Cell Phone go to your Google Play Store type in Steak n Shake. Down load it and Sign up. After you have sign up you can buy gift cards and put them on your cell phone smart app. When you go to pay it takes the money right from your account on your smart phone. Every time you spend $50.00 dollars it give you $5.00 back off of your bill. I use it all the time every time I go there to Steak n Shake.
With any smart phone device or tablet. Download it from google or apple store. I will warn you I've tried it and it doesn't work as well as I would hope. Maybe you'll have better luck
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