Step 1: Sign up with Shopify, Square, etc. (your choice)
Step 2: Make sure it works on your tablet, phone, watch, monitor, etc.
Step 3: make a decision –> portrait or landscape
Step 4: Install a Social Wall
Step 5: Integrate your social wall with your POS
Step 6: Track results
Step 7: Sell advertisements (it become a profit center, not a cost center)