Abstract: A host device to pair with a modular device includes an environmental data collection system to provide motion data, and a data analysis circuit to filter the motion data to provide motion information. The data analysis circuit further to detect anomalies in the motion data to provide anomaly data. The host device further including a pairing system to determine whether the host device is proximate to the modulate device based on a comparison of the motion information with received motion information from the modular device. The pairing circuit is further to pair with the modular device responsive to a match between a key and a received key from the modular device. The host device further including a key generator to generate the key based on a comparison between the anomaly data and received anomaly data from the modular device responsive to a determination that the modular device is proximate.

Abstract: The present disclosure describes a number of embodiments related to devices, systems, and methods for receiving from one or more under-wrist sensors data on finger movements of the user, identifying the location and/or movement respectively of one or more fingers of the user, determining an indication of one or more commands based at least on the identified location and/or movement respectively of one or more fingers of the user, and transmitting the indication of the one or more commands to a device, such as a smartwatch, associated with the user.