Abstract: An interest collection system includes one or more wireless communication technologies such as Radio Frequency Identification (RFID) tags, Near Field Communication (NFC) tags, Bluetooth communication signals, and other one-way or two-way technologies. These technologies can be used to wirelessly interact with reader devices at event locations such that certain types of interactions are interpreted as one or more of participant interest, preference, and participation. Interactions may be recoded and information related thereto may be provided to event participants, organizers, service providers, and/or others for later retrieval and/or analysis. In some examples participant interest, preference, and participation across multiple events may be collected.