1. A system, comprising: a functional device soliciting module configured to solicit, to provide to a limb wearable computing device that is designed to be worn around a limb of a user, gesture indicative data that is indicative of one or more user gestures from one or more functional devices that are within the communication range of the limb wearable computing device, the communication range of the limb wearable computing device being a spatial volume that includes the limb wearable computing device and being externally defined by an enveloping boundary, where low-power signals transmitted by the limb wearable computing device being discernible over background noise within the enveloping boundary and not discernible over background noise outside the enveloping boundary; a gesture indicative data receive facilitating module configured to facilitate the limb wearable computing device to receive the gesture indicative data from the one or more functional devices; and a device operating module configured to operate the limb wearable computing device based, at least in part, on the gesture indicative data provided by the one or more functional devices.