ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,548, issued on Oct. 20.

"Method for rule-driven authentication with decoupled identification choice" was invented by Dimitar Anastasov Grigorov (Sofia, Bulgaria) and Svetoslav Marinov Novkov (Sofia, Bulgaria).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for authentication, designed to allow access and may find application for the purpose of ensuring a higher level of security in electronic identification and communication and protection against unauthorized access, including visual, video or another surveillance of the process. The method is applicable and works successfully in various physical, virtual and operati...