Abstract: Systems, apparatuses, methods, and computer program products are disclosed for PQC. An example method includes transmitting a first portion of an electronic communication to a client device over a non-PQC communications channel. The example method further includes transmitting a second portion of the electronic communication to a PQC add-on device over a PQC communications channel, wherein the PQC add-on device is communicatively coupled to the client device. In some instances, the first portion of the electronic communication may comprise overhead data, and the second portion of the electronic communication may comprise payload data.

Abstract: Disclosed are example methods, systems, and devices that allow for generation and maintenance of a central identity databank for a user's digital life. The identity databank may include identity elements with payload values and metadata values corresponding immutable attributes of the user. A multifactor identity authentication protocol allows service provider devices to more reliably validate transactions with user devices via an identity system. The identity databank may include passwords, which may be generated by the identity system linked to user accounts and/or service providers. The passwords may be provided to service provider devices, eliminating the need for users to conceive of a multitude of varying passwords for the user's accounts.