> For the complete documentation index, see [llms.txt](https://docs.xft.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xft.finance/learn/case-studies/sunpass.md). # SunPass Problem\ Visa/Mastercard fees. Micropayments. Solution\ Zero-fee instant payments for highway toll pay via prepaid SunPass cards. Automated execution of payment flows. COUNTERPARTIES FLUSD 0xe9f8063c0e987a487D886A021778379B52237A5f\ XFTRoutingFactoryV4 0xdFda4930234a6Fc33605E3a1e039F4aCf4928DBf\ XFTRoutingFactoryV4 0xcC6993B1100eF07EDFFCD355eEc71E40e5646667