The document discusses the changing landscape of retail banking as technology advances how customers interact with banks. It notes that while branches are still important for some transactions, most customer interactions now occur online or through mobile devices. The document analyzes customer data to identify different types of customers based on their channel usage, and finds that those who rely more on in-person or phone interactions are more emotionally connected to their bank and less likely to complain or switch. It concludes that banks must find ways to recreate strong emotional bonds with customers who primarily use online and mobile banking to improve customer retention and reduce complaints.