Read-Only 125 KHz Proximity Cards
Hirsch’s Read-Only 125 KHz Proximity Cards are a non-rewritable, cost-effective solution that integrates with existing reader ecosystems supporting EM4102/EM4200. These credentials are not compatible with regular 125 KHz proximity cards and require specific infrastructure to support their custom protocol and frequency modulation (i.e., 64-bit Manchester encoding). This chip solution is widely used in different applications, including access control, logistics automation, industrial applications, anti-counterfeiting, and animal tagging.