I was commissioned to solve a critical challenge: long wait times at Costco checkouts, which frustrated customers and lowered satisfaction. Research revealed that self-checkout lanes were slower than traditional lanes, exacerbating the problem.

Faced with clear constraints:

• Leverage only existing technology for immediate implementation.

• Ensure all items leaving the store were paid for.

• Offer an optional solution without mandatory participation.

I designed a seamless mobile app that allowed customers to scan items as they shopped, bypassing the traditional checkout process. At the exit, they simply scanned a QR code at a self-checkout station to confirm purchases. This solution significantly reduces wait times, enhances the customer experience, and met all project requirements.