The HID Signo Reader 40 is a founding member of the Signo platform. Offering a truly dynamic approach to secure electronic access control, HID Signo Readers are designed to be highly versatile, powerful, and connected for the future. A perfect fit for door applications requiring wall switch mounting, the HID Signo Reader 40 supports an unparalleled range of different credential technologies in a variety of form factors including cards, fobs and mobile devices.