A portable electronic device receives wireless signals from an external signal-generating source. The wireless signals include offering identifiers that are associated with an offering at a location of the external signal-generating source. The portable electronic device may determine the offering identifier from the wireless signal, and match the offering identifier with one or more offerings of interest that are selected by the user. The portable electronic device may determine the direction from which the wireless signal is received based on the strength of the wireless signal received by the antenna, and presenting an indicator to the user that indicates the direction to the location of the external signal-generating source if the offering identifier matches one or more of the offerings of interest as selected by the user.