Backchannel[1] is a term that originated from Victor Yngve in 1970. It refers to a form of communication that occurs in the background or alongside the main conversation or activity. The backchannel has evolved significantly since its inception, with testing systems emerging in the late 1990s and early 2000s, and its notable impact evident at the PC Forum conference in 2002. It has become an integral part of various sectors including education, where it fosters engagement, interaction, and active contribution. The use of backchannel in this environment is facilitated by platforms like Twitter[3] and Facebook[2], and tools like Purdue University’s Hotseat. Backchannel has also been the subject of numerous research studies, exploring its role, impact, and effectiveness in different settings.
Backchannel is the use of networked computers to maintain a real-time online conversation alongside the primary group activity or live spoken remarks. The term was coined from the linguistics term to describe listeners' behaviours during verbal communication.
The term "backchannel" generally refers to online conversation about the conference topic or speaker. Occasionally backchannel provides audience members a chance to fact-check the presentation.
First growing in popularity at technology conferences, backchannel is increasingly a factor in education where WiFi connections and laptop computers allow participants to use ordinary chat like IRC or AIM to actively communicate during presentation. More recent research include works where the backchannel is brought publicly visible, such as the ClassCommons, backchan.nl and Fragmented Social Mirror.
Twitter is also widely used today by audiences to create backchannels during broadcasting of content or at conferences. For example, television drama, other forms of entertainment and magazine programs. This practice is often also called live tweeting. Many conferences nowadays also have a hashtag that can be used by the participants to share notes and experiences; furthermore such hashtags can be user generated.