 IPSN started off as a workshop at Xerox Palo Alto Research Center in 2001, and it was initially called "Collaborative Signal Processing Workshop" (CSP Workshop).Following the success of the first event, in 2003, the workshop defined its focus more on sensor networks and was renamed "International Workshop on Information Processing in Sensor Networks" (IPSN).The event kept the name acronym IPSN from 2003 onwards but the full name changed from "International Symposium on Information Processing in Sensor Networks" (2003 - 2004) to "International Conference on Information Processing in Sensor Networks" (2005 - 2007).