Sander Teunissen is the managing director of CrowdCows, a company that stands out for its innovative combination of audiovisual technology and psychology. Teunissen has developed the Integrated Crowd Communication System, an advanced video system that allows event organizers and security teams to communicate in real-time with attendees at large-scale events. This system combines audiovisual hardware with behavioral psychology insights to subtly guide visitor behavior.

With deep expertise in crowd influence, psychology, and crowd communication, Teunissen has successfully implemented his work across several European countries, including the Netherlands, Belgium, Germany, and Switzerland. A frequent speaker at international industry events such as ESA, ESNS, IBIT, UKCMA, and YES Group, he shares insights on applying communication and psychology strategies to improve event safety and create a more enjoyable event experience.