What innovative retail product did the World Wildlife Fund (WWF) launch in 2019 that allowed consumers to 'adopt' endangered species using augmented reality technology?

The World Wildlife Fund (WWF) has been at the forefront of wildlife conservation for decades, but they've also pioneered innovative retail strategies to fund their mission. In 2019, they launched a groundbreaking product that combined technology, conservation awareness, and consumer engagement in an unprecedented way. Test your knowledge about this revolutionary retail initiative that changed how conservation organizations approach merchandise.

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WWF AR Tokens - collectible coins that activated 3D holographic endangered animals when scanned
Wildlife Witness App - a smartphone application that let users report wildlife trafficking by scanning products in markets
Panda Pay Wristbands - contactless payment devices where each purchase sent a portion to conservation efforts
Endangered Species NFTs - digital artworks of threatened species sold as non-fungible tokens