That’s where Tencent is stepping in. The new tech is undoubtedly appealing as the company competes with Alipay for dominance. And as China continues to grapple with ongoing zero-covid policies that mean people still wear masks and avoid physical contact, allowing people to pay by waving their hands up to a few inches from the camera seems preferable to facial or fingerprint recognition. So by offering users small cash incentives in exchange for their participation and data, Tencent is one step closer to spreading the use of palm-print recognition through everyday life—and on a truly massive scale. 

https://www.technologyreview.com/2022/11/15/1063218/whats-next-biometrics-palm-print-recognition-tencent-we-chat-pay/