According to a recent article in the NY Post, Amazon is testing out new biometric technology that will scan the size and shape of a customer’s hand for a speedier checkout at Whole Foods. The system, which will utilize computer vision and depth geometry to identify the unique dimensions of a customer’s hand, will identify shoppers with Amazon Prime accounts and will link to their debit or credit card on file.

The technology is reportedly being tested at Amazon’s New York offices with select vending machines utilizing the hand biometric system for purchase of snacks, sodas, and phone chargers.

If beta tests are successful, it is expected that the technology will be in select stores by early next year, eventually expanding to all Whole Foods locations in the U.S.