Abstract: The disclosure is directed to a continuously and automatically updated authentication mechanism for authentication, in real-time, the processing of transactions at point of sales devices based on corresponding target-specific identifiers. In one aspect, a processing server includes one or more memories having computer-readable instructions stored therein, and one or more processors. The one or more processors are configured to execute the computer-readable instructions to receive a request for processing a transaction; identify a merchant-specific identifier for a merchant associated with the transaction; determine, in real-time and using a machine trained model, whether the merchant-specific identifier is a valid merchant-specific identifier or not; and process the transaction based on whether the machine trained model indicates that the merchant-specific identifier is valid or not.

Abstract: In some embodiments, there is a method for communicating client device and user information based on position of a user at a facility, comprising: at a server including one or more processors, a database storing user information for the user and a memory storing instructions for execution by the one or more processors: receiving, from a client device operated by the user, one or more messages reporting a location of the client device relative to one or more listeners associated with the facility, wherein the one or more messages comprises client device position information including one or more unique listener IDs associated with one or more listeners, a client device ID associated with the client device and a timestamp indicating when the client device detected a wireless signal from the one or more listeners; storing the client device position information at the database; transmitting the at least one of: the client device position information and the user information to a point of sale (PoS) device operate