A wearable apparatus is provided for capturing and processing images from an environment of a user. In one implementation, a wearable apparatus is provided for identifying exposure to a recognizable item. A wearable image sensor captures a plurality of images from an environment of a user of the wearable apparatus. At least one processing device is programmed to analyze the plurality of images to identify one or more of the plurality of images that include the recognizable item, determine, based on analysis of the one or more of the plurality of images that include the recognizable item, information associated with the recognizable item, and transmit, to an external device, the information associated with the recognizable item and information identifying the user of the wearable apparatus.