Sidewalk brings Main Street to your phone. Order ahead from any participating store, food truck or restaurant and get what you want, quicker. Pay ahead with Apple Pay and avoid lines. Save money with loyalty benefits. All in one free app. Sidewalk is powered by NCR Silver, a mobile point-of-sale system designed from the ground up for small business merchants and their customers. How it works 1.Sign up for Apple Pay2.Download Sidewalk3.Follow the easy instructions to set up your account.