Catcalling as an opportunity for data collection (with the help of the Twilio API). 

*69 (2014)
Performance,  data collection intervention
A piece created in response to catcalling. A server was linked to a phone number that was handed out to catcallers; once a text message was registered, a string of pre-programmed texts were sent to the catcaller and their numbers were saved into a catcaller database.