Abstract: Apparatus and methods for reverse identification and authentication are provided. The apparatus and methods may include a server receiving a request from a user device to authenticate an entity, forming a communication channel between the entity and the user device, requesting the entity provide authentication credentials, and authenticating the entity. When the entity is authenticated, the server may notify the user through the authentication channel, a mobile device application, or another method. An entity may proactively authenticate itself to a user through the central server, in anticipation of a communication between the entity and user.

Abstract: Disclosed is a method of generating a set of sequence-verified nucleic acid elements for the combinatorial construction of genetic elements. The method includes: providing a plurality of nucleic acid parts; assembling nucleic acid parts to form a one or more nucleic acid elements, wherein the nucleic acid elements include at least two sequences selected from the plurality of parts; and determining the sequence of the nucleic acid elements. Further disclosed is a pool of higher-order nucleic acid constructs or amplification products thereof, comprising one or more nucleic acid elements as well as kits including a pool of sequence-verified nucleic acid elements of claims and/or a pool of higher-order nucleic acid constructs; and a plurality of primers for retrieving one or more sequence-verified nucleic acid elements and/or higher-order nucleic acid constructs.