Abstract: A method, system and apparatus for partial credential processing for limited commerce system interactions. The method can include identifying a visitor to a commerce system as an unauthenticated albeit registered user of the commerce system. Subsequently, the visitor can be provided access to a limited subset of commerce data for the registered user under an un-trusted identity. In the course of the visitor interacting with the commerce system, additional commerce data, such as shopping cart data, can be generated under the un-trusted identity until the visitor authenticates with the commerce system. When the visitor authenticates with the commerce system, a full set of the commerce data for the registered user under a trusted identity can be provided. Additionally, the generated additional commerce data can be merged under the un-trusted identity with the commerce data for the registered user under the trusted identity.