Amazon is offering $10 in promotional credit to get people to sign up to its palm print payments system. Our sister site TechCrunch spotted the promotional offer and shared a screenshot of it, which you can peep below. The retailer launched Amazon One last fall as a contactless way of authenticating purchases and allowing entry into stores using a biometric device. In this case, a palm scanner. With surface hygiene a major concern during the pandemic, the move made sense.