What do the cameras on the GoDaddy Smart Terminal Duo do?

The GoDaddy Smart Terminal Duo has two cameras. The merchant facing camera is above the upper right corner of the merchant screen, while the customer facing camera is above the upper right corner of the customer screen. The cameras can be used as barcode scanners when creating an order using the Register app.

Diagram showing the locations of the two cameras, one above the right side of each screen