Abstract: The present invention is related to a system and corresponding method and computer implemented software for improving performance of at least one electronic devices, said devices including at least one sensors and a model defining the device reaction in response to data produced by at least one of said sensors. The system includes a model generator configured to analyze the data produced from said sensors and the reactions to the data, and register errors in the reactions as compared with the intended reactions, wherein the model generator is configured to adjust the device model by minimizing errors between the actual output of the model and the desired output of the model, based on a set of samples recorded on said at least one electronic devices, wherein the recorded samples include information related to which of a number of predefined states the device is in at the occurrence of the error, the time of the occurred error, and the number of errors at the specified time and/or state.

Abstract: A method alerts a user of a first device to the presence of a second device which can interact with the first device. The method includes using an ultrasonic signal transmitted by one of the devices to determine whether the first device is within a threshold distance of the second device. If the first device is determined to be within the threshold distance of the second device, a notification is triggered on the first device.