Systems, methods, media, and other embodiments associated with optimizing code motion with delayed exception handling are described. The sealing material contains a fluorescent substance and divided into a first fluorescent-substance-containing resin layer and a second fluorescent-substance-containing resin layer by a first resin ring and a second resin ring. A probability density function is derived for the location of the wireless communication unit, from measured information andor information about the wireless communication network. In one embodiment, the elongate member is formed from a plurality of links that are pivotally coupled to one another. In such embodiments, the cap member is screwed onto the container member by means of the threads. Geo data collected by the monitoring devices is downloaded to a download server, for determining which potential business locations the respondent was exposed to.