Out of frustration, Harris develop tracking software, which alert the sender whenever a delivery arrives past its guaranteed delivery time. This software became the basis for OnTimeAuditor.com . Here's how the business work: OTA's customers pay a monthly fee of $9.95 to use HArris's software. it's notifies them when shipments they have sent to they customers are late. Arrived with this information, they can demand a refund from the shipper, typically ten or twenty dollars per package. As of spring 2000, when the service started, the software worked for FedEx and UPS, and the company was planning to add other carriers over time.