Colombia is not yet listed as a Tap to Pay user, but it is in the process of becoming so. We are currently a group of developers at a company in Colombia working on a project to integrate Tap to Pay into our application. After reviewing Apple's documentation, my company is not certified to meet Apple's security requirements, PCI standards, or licensing requirements. However, the payment service provider we have contracted for this is in the process of obtaining the certifications, authorizations, and licenses that Apple specifies. Our team members and managers overseeing this Tap to Pay project have told us that we, as iOS developers, should integrate and use the Proximity Reader API, but we know that we, as developers, are not authorized by Apple to do so. Is the payment service provider the only one who can make this possible, enabling its use with NFC and Proximity Reader? I would like to know if the service provider will provide us with the SDK containing the Proximity Reader API for integration into the project, or if my company will have to implement the Proximity Reader API ourselves?