Abstract: Wireless data access is provided for customers using a preexisting merchant data connection. An access point is used to communicate wirelessly with customer-owned or merchant-provided computing devices. The preexisting data communication link includes merchant-generated traffic, such as credit card authorization transactions or corporate electronic mail. A router is configured to combine customer-generated wireless traffic with the merchant-generated traffic and to transport the combined data over the preexisting data communication link. Further features, such as protocol conversion, are also provided.