Physical Access



The Wiegand interface is a de facto wiring standard which arose from the popularity of Wiegand effect card readers in the 1980s. Wiegand is a

Physical Access (PACS)


A Physical Access Control System (PACS) grants access to employees and contractors who work at or visit a site by electronically authenticating their Personal Identity Verification (PIV) credentials or some other ID card such as a smart card.