GuardDog Biometric Readers
Chapter 1 • Introducing the GuardDog
Owner’s Guide
3
Data Encryption and Digital Signing
Information stored in the iButton and contactless smart cards is encrypted using an industry-
standard encryption algorithm. In addition, the data is digitally signed. The GuardDog accepts
only tokens signed with the correct digital signature.
Digital Interfaces
GuardDogs are designed to operate as stand-alone devices or connected to a central system via
an RS-232 or RS-485 interface. The RS-232 interface allows connection of a single GuardDog
to the serial port of a standard PC located close to the unit. The RS-485 interface allows
connection of multiple GuardDogs to a twisted pair LAN extending up to several hundred feet.
Multiple GuardDogs can be connected in a single network, with multiple security groups.
The GuardDogs also include an industry standard Wiegand output interface that supports the
connection of electronic door locks.
User Interfaces
Both GuardDogs have two LEDs and a buzzer to provide both visual and audible indicators
for authentication success/failure.
Summary of Contents for GuadDog
Page 1: ...GuardDog Biometric Reader Owner s Guide ...
Page 4: ...Contents GuardDog Biometric Readers Owner s Guide iv ...
Page 6: ...Safety Precautions GuardDog Biometric Readers Owner s Guide vi ...
Page 10: ...Getting Help GuardDog Biometric Readers Owner s Guide x ...
Page 14: ...Chapter 1 Introducing the GuardDog GuardDog Biometric Readers Owner s Guide 4 ...
Page 22: ...Chapter 2 Using the GuardDog GuardDog Biometric Readers Owner s Guide 12 ...
Page 26: ...Chapter 3 Maintaining the GuardDog GuardDog Biometric Readers Owner s Guide 16 ...
Page 30: ...Chapter 4 Product Specifications GuardDog Biometric Readers Owner s Guide 20 ...