A microelectromechanical system microphone has a substrate including a backside trench, and a flexible membrane deposited on the substrate extending over the backside trench. In a preliminary step, the secret key and a random number are applied to a function producing a first key. Management status, reporting, scheduling, and accounting information is sent to the user as the translation process ensues. Another example device is arranged to enable machine control for a limited period of time after a positive detection that it is located at a control location. This makes the application orders of ink for either dot size symmetric in each pixel of secondary color and thus there is no difference between application orders in formation of the pixel by either forward or backward scanning, whereby occurrence of uneven color due to the application orders of ink can be reduced.