Merchant IDs (MIDs) are vital components of the payment ecosystem, acting as unique identifiers for physical or online merchant locations to facilitate accurate fund transfers by payment processors. Fidel utilizes MIDs to track qualifying card transactions in real-time, ensuring precise data delivery across various merchant locations, such as shopping centers. The company emphasizes the importance of securing MIDs, adhering to PCI DSS regulations, and employing tokenization to protect sensitive data during its transmission within their API. Fidel strives to make the process of providing MIDs straightforward and secure, positioning itself as a custodian of data by prioritizing consent and security for its clients and participating merchants. The tokenization process assigns unassociated data elements to sensitive information, creating tokens that mask original data while allowing secure transport, thus safeguarding cardholder privacy.