For AI agents: visit https://carecloud.readme.io/llms.txt for an index of all pages formatted in Markdown and endpoints in OpenAPI. Append .md to any documentation page URL to get its markdown version.
Cards are the primary loyalty identifiers for customers. A customer can hold multiple cards (physical or virtual), each with a card number, card type, and validity period. Cards are used to identify the customer at a point of sale and to accumulate loyalty points and credits.