How a Store's Payment System Keeps Your Card Info Safe

This patent describes a store payment system where your touchscreen inputs, like your PIN, are encrypted by a special processor before being sent for payment, keeping your information secure.

What it covers

The patent describes a point-of-sale (POS) system with a merchant terminal and a consumer terminal. The consumer terminal has a touchscreen display where you enter information, such as a PIN or signature. A 'touch controller' receives these user inputs from the touchscreen. This controller then selectively sends the inputs to a dedicated 'second processor'. The second processor's specific job is to encrypt these sensitive user inputs immediately. After encryption, the second processor sends the scrambled data to a 'first processor', which then transmits the encrypted inputs to an external payment system for processing.

What it doesn't cover

• —Does not cover payment systems that rely solely on physical keypads for PIN entry, as it specifies a 'touch screen display' for user inputs.
• —Does not cover systems where a single processor handles both receiving user inputs and encrypting sensitive data.
• —Does not cover general data encryption methods not specifically tied to point-of-sale transaction input from a consumer terminal.
• —Does not cover systems where user inputs are encrypted only after being fully processed or transmitted by the main 'first processor'.
• —Does not cover payment systems that do not separate functions into distinct merchant and consumer terminals.

The clever bit

The clever part is using a dedicated 'second processor' to encrypt user inputs immediately after they are received by the touch controller, before they even reach the main 'first processor'. This creates an isolated and secure path for sensitive data, making it much harder for malicious software on the primary system to intercept unencrypted information.

Why it matters

This technology is important because it aims to protect sensitive consumer information, like credit card numbers and PINs, right at the point of entry. By encrypting data early in the process, it significantly reduces the risk of fraud and data breaches during retail transactions. This builds trust for consumers and helps merchants comply with strict security standards for handling payment data.

Real-world examples

• 1.Modern payment terminals at grocery stores
• 2.Self-checkout kiosks in retail environments
• 3.Restaurant tableside payment devices
• 4.Gas station payment terminals with touchscreens