; and (ii) linked, or reasonably linkable, to a specific person. (B) Exclusion The term user data does not include information that is rendered unusable, unreadable, de-identified, or anonymized. 3. Portability (a) General duty of large communications platform providers A large communications platform provider shall, for each large communications platform it operates, maintain a set of transparent, third-party-accessible interfaces (including application programming interfaces) to initiate the secure transfer of user data to a user, or to a competing communications provider acting at the direction of a user, in a structured, commonly used, and machine-readable format. (b) General duty of competing communications providers A competing communications provider that receives ported user data from a large communications platform provider shall reasonably secure any user data it acquires. (c) Exemption for certain services The obligations under this section shall not apply to a product or service by which a large communications platform provider does not generate any income or other compensation, directly or indirectly, from collecting, using, or sharing user data. 4. Interoperability (a) General duty of large communications platform providers A large communications platform provider shall, for each large communications platform it operates, maintain a set of transparent, third-party-accessible interfaces (including application programming interfaces) to facilitate and maintain technically compatible, interoperable communications with a user of a competing communications provider. (b) General duty of competing communications providers A competing communications provider that accesses an interoperability interface of a large communications platform provider shall reasonably secure any user data it acquires, processes, or transmits. (c) Interoperability obligations for large communications platform providers (1) In general In order to achieve interoperability under subsection (a), a large communications platform provider