Resources Contact Us Home
Security apparatus and system for retail environments

Image Number 6 for United States Patent #5448638.

A gasoline service station includes gasoline dispensers and a PIN pad including keypads for receiving personal identification numbers and assembled into a network for securely communicating personal identification numbers from the PIN pads and dispensers to a host computer over unsecured data lines. The PIN pads and dispensers each include means for encryption and outputting of personal identification numbers. A security module includes means for decryption of data associated with each PIN pad and dispenser in a process for the respective PIN pads and dispensers and means for encryption of data associated with the host computer in a process which is different from its decryption of data associated with the PIN pads and dispensers. A site controller, which is not secure from unauthorized signal detection, has means for directing encrypted data received from the PIN pads and the dispensers to the security module and from the security module to the dispensers or the host computer as needed for properly directing encrypted data to a desired destination.

  Recently Added Patents
Key management policies for cryptographic keys
Polarity switching member of dot inversion system
Actuator, actuator structure and method of manufacturing actuator
Managing imaging of computing devices
Switch redundancy in systems with dual-star backplanes
Digital watermark embedding apparatus, digital watermark embedding method, and digital watermark detection apparatus
Method and apparatus for image sensor packaging
  Randomly Featured Patents
Luer-type needle-free valve fitting with bypass
Gas pulsation attenuator for automotive air conditioning compressor
Umbilical cord blood extractor
Ethylene-.alpha.-olefin copolymer and article
Tight screw cap for threaded container neck
Bicycle hub transmission with a shift key that is axially immovable relative to a clutch member
Switching power amplifier
High-resolution detection of material property variations
Detergent composition containing a microbial heteropolysaccharide stabilizing agent
Mix suitable for use in seams between carbon blocks