FBI Raids Chinese Point-of-Sale Giant Pax Technology

They were the equivalent of Ubiquiti in the pinpad space, when they entered the US market small and medium businesses had little choice besides them (or a much more expensive solution like Square where you do not get to choose your payment processor and pay dearly in fees) if they wanted to have a pinpad that showed custom promotions as a wallpaper, asked for email/phone #, stored cards for recurring payments, could change processors with a hands off remote key injection.

For Point of Sale developers you either get to integrate with a godawful middleware like Datacap or do a direct integration with Ingenico or Verifone and a single payment processor, which creates significant vendor lockin. Your only alternatives were Pax and later Dejavoo offering simple APIs for semi-integrated payments.

yikes