"It's called Rebo and it's the first bottle that cleans the planet as you drink. One Rebo drunk is one plastic bottle collected as simple as that. Rebo is a smart bottle equipped with a laser time-of-flight sensor and a Bluetooth transmitter that measures and senses the water you drink. The Rebo the app captures the information and records it into the blockchain transforming it into green credits that sponsor the collection of plastic bottles every minute."
"It's called Rebo and it's the first bottle that cleans the planet as you drink. One Rebo drunk is one plastic bottle collected as simple as that. Rebo is a smart bottle equipped with a laser time-of-flight sensor and a Bluetooth transmitter that measures and senses the water you drink. The Rebo the app captures the information and records it into the blockchain transforming it into green credits that sponsor the collection of plastic bottles every minute."
Source: https://www.youtube.com/watch?v=KupJgVupEtk