Like ordinary headsets, they're capable of broadcasting and receiving audio clearly, with Kilik Rung and Liz Thompson both praising the Demon Tool for it's ability. However, a powerful Madness Wavelength can disrupt or block signals, preventing other parties from communicating with one another.
- The three Japanese kanji used in the word 'Incom' are a part of the verb 'to hide' (隠し Kakushi), the word for 'meeting' (会 Kai), and 'nothingness' (無 Mu). This explains how the Incoms allow 'hidden conversations/meetings' through its communication abilities. The kanji for nothingness is connected to the Japanese word for 'wireless' (無線 Musen).