The start-up Rainforest Connection (RFCx) has announced a partnership with a Brazilian NGO to bring its alert system to the forest homeland of the Tembé people. Rainforest Connection's system is built using a network of recycled Android smartphones, which are modified to detect specific sounds, including the audio signatures to chainsaws, gunshots, and vehicles. When the system registers one of these sounds, it sends a signal – in real-time – to local authorities, who can then potentially take action to stop illegal logging or poaching as it happens. Each RFCx device can monitor roughly three square kilometers of forest. The project has received celebrity endorsement from musician Neil Young.