1. A system, comprising: a gesture identifying unit to: obtain, from a non-contact gesture identifying sensor associated with a device, a plurality of position points associated with an object's non-contact gesture movement corresponding to respective ones of a plurality of sampling times; and determine that the object's non-contact gesture movement comprises a preset non-contact screenshot gesture based at least in part on the plurality of position points meeting a condition associated with the preset non-contact screenshot gesture; and a screenshot triggering unit to generate a screenshot in response to the determination that the object's non-contact gesture movement comprises the preset non-contact screenshot gesture.