A target receiver may receive a location-related specification and a time period-related specification, the time period-related specification specifying time period in which to check for the location-related specification. A location monitor may determine current location-related information. A time period monitor may determine current time-related information. An analyzer may determine whether a pair of the location-related specification and the time-period related specification is satisfied by the current-location information and the current time-related information. The analyzer may further provide notification as to whether the pair of the location-related specification and the time-period related specification is satisfied by the current-location information and the current time-related information.