Speakerphones are also sometimes used, but these can create challenges both in terms of confidentiality, and for the interpreter, especially due to background noise, which can hinder the interpreter's ability to hear.
Dolgin was a mentor to Bay Area filmmakers, hosting monthly gatherings at her home in Berkeley, California to watch and discuss films with their directors via speakerphone, and served as a judge, board member and reviewer with the Sundance Film Festival, Independent Television Service, Berkeley Film Foundation and San Francisco Jewish Film Festival.
On each episode contestants were assigned tasks by Oscar, the house's unseen owner who communicated over speakerphone in an obvious parody of Charlie from Charlie's Angels.
In 2004, SuperTooth created the concept of a Bluetooth speakerphone that could be clipped onto a car’s sun visor.