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.

Rainforest Connection, a non-profit based in San Francisco, plans to install used Android smartphones in rainforests to help curtail illegal logging. The phones have been configured to trigger an alert for noises that match the sound signature of a chainsaw within an area of about a third of a square mile. The organisation claims this can be done at minimal cost – for example, in Indonesia unlimited data for one phone costs just $2.89 per month – and the phones can be powered using solar energy. The venture is seeking funding through the crowdfunding platform Kickstarter.