Genius for Retail runs the POS on several platforms. Match the setup guide to the hardware in front of you.
This is the newest configuration and the one described in the current POS user guide. It pairs an Android POS with a Genius reader and a customer facing display that mirrors the ticket, prompts for signature and collects the receipt preference.
Check the hardware list and the IT and hardware guidelines. Unsupported hardware is the most expensive shortcut on a retail install.
Source: Global Payments Genius Retail help center. Newly built article, pending review.