How Digital Receipts Turn One-Time Payments Into Ongoing Customer Relationships

A system that transforms static digital receipts into dynamic, time-sensitive portals for rewards, feedback, and tipping after a purchase is complete.

What it covers

This patent describes a system that replaces a simple transaction record with an interactive digital receipt sent to a customer's mobile device. Unlike a paper slip, this receipt includes active components like promotional offers, feedback forms, and tipping interfaces that are only available for a specific, merchant-defined timeframe. A key feature is the dynamic value of rewards: the system can automatically decrease the value of a promotion the longer a customer waits to interact with it. For example, a customer might receive a 20% discount coupon that shrinks to 10% if not claimed within an hour of the transaction.

What it doesn't cover

• —Does not cover static digital receipts that merely display transaction details without interactive, time-based components.
• —Does not cover loyalty programs that operate independently of the interactive digital receipt interface.
• —Does not cover payment processing itself, but rather the engagement layer added to the receipt after the transaction is instantiated.
• —Does not cover general-purpose messaging apps that are not specifically tied to the receipt-generation workflow described.

The clever bit

The system uses the 'timeframe' as a variable to influence consumer behavior, specifically by making the value of a reward decay over time to create urgency for the customer to engage with the merchant immediately.

Why it matters

This patent represents a shift in merchant-customer engagement, moving from passive transaction logging to active customer retention. By integrating feedback and rewards directly into the receipt, Square created a way to keep customers engaged with a brand long after they have left the physical store. It highlights the transition of the receipt from a boring proof-of-purchase into a functional marketing tool.

Real-world examples

• 1.Square Point of Sale digital receipts
• 2.Merchant-branded loyalty apps
• 3.Post-purchase feedback prompts in mobile wallets