CSI Wireless Awarded U.S. Patent for Revolutionary "e-Dif" Software

CSI Wireless' patented e-Dif software enables users to achieve one-metre Differential GPS accuracy without the costs of potential uncertainties of differential signals.

CALGARY, June 19, 2002- (TSX:CSY): CSI Wireless Inc, a leader in GPS and
wireless technology products for automotive, consumer and commercial
applications, today announced it has been awarded a U.S. patent for its e-Dif
or "extended differential" software that enables GPS receivers to achieve the
much higher accuracy available from Differential GPS (DGPS), but without any
help from accuracy-enhancing differential signals.

e-Dif enables a standard GPS receiver, typically capable of only 10-metre
or 15-metre accuracy, to internally generate differential corrections that
improve its accuracy to one metre - without the expense or potential
uncertainties of DGPS signals. e-Dif computes corrections that last for as
long as 40 minutes, after which the receiver re-computes a fresh set of
corrections that last for another 40 minutes.

"e-Dif can save customers the cost of paying subscription fees for DGPS
signals in regions - such as South America, Africa and Australia - where DGPS
signals are not free," said Stephen Verhoeff, President and CEO of CSI
Wireless. "Even in North America, where DGPS signals are free, e-Dif is a
valuable back-up against signal outages. And in northern latitudes, including
many parts of Canada, e-Dif can achieve better accuracy than what is possible
using free DGPS signals from public satellite networks such as WAAS, or when a
receiver is on the fringe of ground station networks such as beacon DGPS."

Standard GPS involves a ground-level receiver using pre-programmed data
to know the orbital location of each of 24 GPS satellites - collectively known
as the U.S. government's Global Positioning System (GPS) - that circle 22,000
kilometres or 13,000 miles above Earth. The receiver, by comparing the
location data with the time required to receive a satellite's signal,
calculates its own position on Earth.

A standard GPS receiver cannot calculate its own position any more
accurately than about 10 or 15 metres - mainly because the signals coming from
satellites are distorted while traveling through the ionosphere (60 to 100
kilometres above the Earth) and troposphere (six to 15 kilometres above the
Earth).

Accuracy can be improved to one metre when differential corrections -
which highlight the difference between the actual signal and the distorted
signal - are broadcast to the GPS receiver from ground-based beacon networks,
from public satellite networks such as the United States' Wide Area
Augmentation System (WAAS) and Europe's EGNOS that is under development, or
from private satellite networks such as OmniSTAR.

However, all of these correction systems require DGPS signals, and some
involve yearly subscription fees that can total thousands of dollars. In
contrast, the e-Dif option, which may be installed at the factory or in the
field, does not require DGPS signals, does not involve any risk of potential
DGPS signal outages, and features a very affordable one-time price of about
US$1,200.

The software computes corrections at a specific moment and then, after
making sophisticated adjustments for ionospheric and tropospheric conditions,
continues to forecast accurate corrections for as long as 40 minutes - after
which the receiver computes corrections at another specific moment and starts
the forecasting again.

"e-Dif represents a very cost-effective method of achieving DGPS
accuracy," Mr. Verhoeff said. "It is significant that the U.S. Patent Office
has recognized the very unique and special nature of our revolutionary new
software."

The software, developed by CSI Wireless' Satloc LLC subsidiary in
Scottsdale, Arizona, has already been incorporated into several CSI and Satloc
products including the DGPS MAX, SLXg3, SERES and AgIQ receivers, and the
popular Outback(TM) S precision guidance agricultural product that is sold
exclusively through RHS Inc.

e-Dif is one of several patents and intellectual properties owned by CSI
Wireless, the result of a concerted research and development program that
totaled $8.1 million in 2001.

About CSI Wireless

With offices in Calgary, Silicon Valley, and Phoenix, CSI Wireless
designs and manufactures innovative, cost-effective, wireless and GPS products
for mobile and fixed applications in the agriculture, marine, automotive and
other markets. Through the integration of GPS and wireless, CSI has begun
serving several emerging high-growth markets including Fleet Management, Asset
Tracking, Telematics and Mobile Computing applications. CSI Wireless has
licensed its cellular technology to GPS, cellular handset, and chipset
manufacturers. The company's common shares trade on The Toronto Stock Exchange
under the trading symbol "CSY", with approximately 18.4 million outstanding.
For online information about CSI Wireless, go to www.csi-wireless.com.

For further information:

Stephen Verhoeff, President & CEO, CSI Wireless Inc., (403) 259-3311, sverhoeff@csi-wireless.com
Cory Pala, Investor Relations, E-vestor Communications Inc., (416) 657-2400, cpala@e-vestorcom.com
Jeff Adams, P.R. Manager, CSI Wireless Inc., (403) 259-3311/615-8747 (cell), jadams@csi-wireless.com