1. A method, comprising: detecting a first event at a touch interface of a wearable computing device, wherein detecting the first event comprises detecting a first capacitance change at the touch interface; determining a first-event signature of the first event based on at least the first capacitance change; selecting a first-event classification for the first event from among a touch classification and a potential-touch classification based on the first-event signature; determining a first-event confidence value for the first-event classification; obtaining contextual information during a predetermined time after detecting the first event, comprising: detecting a second event at the touch interface of the wearable computing device, wherein detecting the second event comprises detecting a second capacitance change at the touch interface, determining a second-event signature of the second event based on at least the second capacitance change, and selecting a second-event classification for the second event from among the touch classification and the potential-touch classification based on the second-event signature; and adjusting the first-event classification for the first event at the touch interface based at least on the second-event classification for the second event at the touch interface.