reader and method of determining the validity of a connection to a transponder and computer-readable medium

摘要

Invention Patent Application for: "READER, TRANSPONDER, METHOD FOR A READER AND METHOD FOR A TRANSPONDER FOR DETERMINING THE VALIDITY OF A CONNECTION, LEGIBLE MEANS BY COMPUTER AND PROGRAM ELEMENT". The present invention relates to a reader (420) for determining the validity of a connection to a transponder (440), configured to measure a transponder's response time (4 4 O) and to authenticate the transponder (4 4 O) in two separate steps. It also refers to a transponder (440) for determining the validity of a connection to a reader (420), wherein the transponder (440) is configured to provide information for measuring the response time to said reader (420) and to provide information for authentication of said reader (420) in two separate steps, in which at least part of the data used for authentication is included in a communication message transmitted between the reader (420) and the transponder (440) during time measurement Give me an answer.