What is the fine-grained topic of the following text: In this interview, Tinley discusses how MEXIA already had an algorithm devised for airports – with added features to enable the system to read the RFID chip on the attendees’ cards, securely access images that are already stored in a database, and then use that image to match up people “in the wild” to those wanting to enter the event securely and accurately. Only return the topic.
Use of MEXIA's algorithm and RFID technology for secure event access