Conducting a transaction at a mobile pos terminal using a defined structure

A mobile device SDK incorporated into a client application on a mobile device, the mobile device SDK comprising:

• an accessory conversion module for communicating with an accessory device module of an accessory device;
• wherein the mobile device SDK receives accessory device capabilities from the accessory device module and provides the accessory device capabilities to the client application;
• and
• wherein the mobile device SDK receives, from the accessory device module, transaction data for a transaction in an accessory device format,
• wherein the accessory conversion module converts the transaction data from the accessory device format into a defined structure;
• wherein the mobile device SDK provides, to the client application, the transaction data in the defined structure.

A method for conducting a transaction using a mobile device, the method comprising:

• receiving, by a mobile device SDK, a request for accessory device information from a client application;
• retrieving, by the mobile device SDK, accessory device capabilities from an accessory device;
• providing, by the mobile device SDK, the accessory device capabilities to the client application;
• receiving, by the mobile device SDK, transaction data in an accessory format from the accessory device;
• converting, by an accessory conversion module of the mobile device SDK, the transaction data from the accessory device format to a defined structure;
• providing, by the mobile device SDK, the transaction data in the defined structure to the client application;
• and
• wherein the mobile device SDK is incorporated into the client application.

A non-transitory, tangible computer-readable storage medium having computer-executable instructions stored thereon that, if executed by a client application incorporating a mobile device SDK for conducting a transaction, cause the mobile device SDK to perform operations comprising:

• receiving, by the mobile device SDK, a request for accessory device information from the client application;
• retrieving, by the mobile device SDK, accessory device capabilities from an accessory device;
• providing, by the mobile device SDK, the accessory device capabilities to the client application;
• receiving, by the mobile device SDK, transaction data in an accessory format from the accessory device;
• converting, by an accessory conversion module of the mobile device SDK, the transaction data from the accessory device format to a defined structure;
• providing, by the mobile device SDK, the transaction data in the defined structure to the client application.