Compatible with any reader that uses Wiegand 26-37 bit input. Can be virtually connected to any keyboard reader that outputs 4 Bit, 8 Bit (ASCII), or 10 Bit. Multi-access modes for flexible security: - Card only - Card or PIN - Card with PIN - Support for multiple cards and PINs Master Card function is supported for admin control and overrides. Key benefits: - Broad compatibility reduces the need to replace existing hardware - Flexible credentialing supports varying security policies - Scalable multi-card/multi-PIN configurations for growing environments - Simple integration with both Wiegand and keyboard-based systems Use scenarios: - Small office with existing Wiegand readers can implement card-based access or card+PIN without new hardware - Facilities using keyboard entry can add card authentication by virtually connecting to 4/8 ASCII or 10 Bit outputs - Multi-tenant or shift-based environments can assign multiple cards and PINs, with a Master Card for administration and overrides This solution focuses on function, compatibility, and reliable access control while staying consistent with the original specifications.