Keycorp: Tailored Solutions, Superior Service. Keycorp are Australia’s largest independent, multi-vendor, payments technology service provider. Beyond our expertise in EFTPOS solutions, our services also cater for the diverse technology servicing needs of leading retailers, financial institutions and large corporate organisations. We offer a complete service, extending from basic merchant installation through to asset and complete fleet management. Through our combined expertise and superior customer service, Keycorp make it easy to deliver the best solutions to end users.