ALEXANDRIA, Va., June 19 -- United States Patent no. 12,335,811, issued on June 17, was assigned to MERCEDES-BENZ GROUP AG (Stuttgart, Germany).
"Method for authorizing access to a motor vehicle by means of a mobile electronic identification transmitter" was invented by Konrad Betz (Stuttgart, Germany), Matthias Reinhardt (Sindelfingen, Germany) and Marco Leicht (Neuhausen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for authorizing access to a motor vehicle involves monitoring a decrease in the signal strength of the second communication connection, while the identification transmitter is moved away from the motor vehicle, such that the spacing between the motor vehicle and the identific...