is an open standard in wireless technology to enable communication
between devices. The main aim of the technology is to act as an
interface that replaces wires as a medium of communication between
devices at low cost. For example, Bluetooth technology allows a
desktop or a laptop to communicate with a printer or a scanner wirelessly.
Under normal circumstances, the computer has to be connected to
the printer or scanner through a physical link with the necessary
drivers installed. This principle is the same for existing installations
of remote capture and analysis equipment such as enforcement, barrier
and surveillance systems.
Actis Media has developed technology to work with Bluetooth
to deliver unique functionality in support, maintenance and review
of delivered systems.
Running on either PDA devices or laptops the System Pilot software allows engineers and other authorised
users to interrogate and control devices across a secure wireless
With System Pilot user are able to perform:
and zoom with touch screen control
pan and zoom with touch screen control
As radio signals can be easily intercepted,
Bluetooth devices have built-in security to prevent eavesdropping
or falsifying the origin of messages (spoofing).
The main security features are:
routine - for authentication, which prevents spoofing and unwanted
access to critical data and functions
Stream cipher - for encryption, which prevents eavesdropping
and maintains link privacy
Session key generation - session keys can be changed at any
time during a connection
Three entities are used in the security algorithms:
||The Bluetooth device
address (48 bits), is a public entity unique for each device.
The address can be obtained through the inquiry procedure
A private user key (128 bits) is a secret entity. The private
key is derived during initialisation and is never disclosed
A random number (128 bits) is different for each new transaction.
The random number is derived from a pseudo-random process in
the Bluetooth unit
In addition to these link-level functions, frequency
hopping and the limited transmission range also prevent eavesdropping.
Low cost communication combined with System
Pilot provides a powerful platform for efficient
cost effective support and maintenance of field apparatus.