Strengthen access control at the door with HID Global Signo 20. Built in a mullion form factor, this reader is designed for installations where space is tight but credential flexibility still matters. Support for both 13.56 MHz and 125 kHz credentials helps simplify transitions from legacy badges to newer identity formats, while OSDP and Wiegand compatibility makes it easier to fit into mixed security environments. For organizations standardizing physical access, the value is in breadth and control. Mobile-ready support adds another layer of credential flexibility for teams moving toward phone-based access, and the pigtail connection style supports practical field installation. That combination makes this model a strong fit for enterprise entrances, interior secure areas, and retrofit projects where you need to preserve infrastructure investment while improving the user experience. Choose it when you need a reader that can serve both current and future access strategies without forcing a full rip-and-replace. HID Global’s Signo line is built for professional deployments that demand compatibility, clean integration, and long-term operational confidence.