; portal features (I) Application An eligible entity shall submit to the Secretary an application at such time, in such manner, and containing such information as the Secretary may require, including— (aa) a description of how the eligible entity plans to implement the requirements described in clause (v); and (bb) a beta plan that has been user-tested. (II) Portal features In awarding a contract to an eligible entity under clause (ii), the Secretary shall give preference to an eligible entity that demonstrates an ability to implement the following features of an EBT Online Redemption Portal: (aa) Client-facing technology with a primary preference for mobile device or smartphone application. (bb) Fail-safe systems to maintain privacy and online security of data. (cc) Ability to redirect a consumer to an existing online platform of a vendor, if applicable. (dd) Ability to update as technologies evolve. (ee) Ease of operation for program participants, including multilingual functionality. (ff) Interoperability with delivery technologies and interfaces. (gg) Identification of participating retailers within geographic proximity to the user. (hh) Ability to perform single transactions using mixed tender, including a single transaction for eligible food items using an EBT card and noneligible items using another form of payment. (ii) Adherence to a comprehensive business continuity and disaster recovery plan— (AA) to allow the portal to recover from any interruption of service