1) A new innovation ok. People have been doing that for more than a decade, my group included.

2) Given the sensors look, it's almost certainly near infrared (NIR) camera, probably 850nm illumination and the dark surface is a NIR filter.

3) It certainly capture a mix between palm veins (850nm quite absorbed by de-oxygenated hemoglobin) and palm skin ridges.

"Rather, the images are encrypted and sent to a highly secure area we custom-built in the cloud where we create your palm signature."

4) Weird approach to biometric template security to send palm picture to a server...

5) Curious how anti-spoofing is implemented, if at all.

edit: less agressive