The investigation by Gamers Nexus, Level1Techs and independent security researchers also identified automated content recognition (ACR) systems that can track viewing activity, including for advertising purposes. The team also demonstrated that a compromised TV could capture conversations through its microphone, including while in standby, store the audio while offline and retrieve it once the connection returned. LG disputes claims, saying voice data is processed only when users intentionally activate voice features and that audio analyzed locally for wake-word detection is subsequently deleted.