Removing the PAN from the device before requesting the account code
Applicant recast eligibility as a payment-device security problem: a POS application and NFC reader arrangement in which the primary account number is handled separately from the user's account code. Rather than argue in the abstract, the claims were amended to recite the sequence itself.
“removing, by the POS application, the PAN from the mobile device … before requesting the account code”; “causing display of an input field requesting the account code … in response to determining that the PAN has been successfully removed”; “generating a communication … including second encrypted data representing the account code and the identifier of the transaction without the PAN.”
Why it ranks first. The Notice of Allowance expressly identifies the claimed invention as a method and system of generating a default code and removing a PAN from a mobile device. That maps directly onto the applicant's eligibility framing.
Caveat. The Advisory Action initially rejected the eligibility arguments, including skepticism that adding an NFC component was enough. Allowance followed an RCE and examiner's amendment activity. The record does not establish that Bartley accepted the BASCOM, Berkheimer or PEG Example 35 reasoning as stated.