TruePosition(R) Unveils Breakthrough Hybrid Location Solution(TM) to Improve Accuracy and Reliability for E-911 and all Location-Based Services

TruePosition, Inc., a leading provider of wireless location
technologies and solutions and a subsidiary of Liberty Media
Corporation, today announced the TruePosition(R) Hybrid Location
Solution(TM). This mobile positioning method combines network-based
and handset-based location technologies and leverages the benefits of
each to gain higher accuracy and reliability than any other single
location technology.

By combining multiple location technologies, TruePosition offers
significantly improved performance for all location-based services.
The Hybrid Location Solution provides better accuracy and consistency
for consumer services such as local search and location-based
advertising. The solution also enhances enterprise services including
workforce management and asset tracking. Most importantly, it offers
the accuracy, latency, and yield required for safety and security
services such as family monitoring, personal medical alerts, and
emergency number services including E-911 (in the US) or E-112 (in the
European Union).

The TruePosition Hybrid Location Solution can incorporate a
combination of location technologies such as Cell ID (CID), Enhanced
Cell ID (ECID), Angle of Arrival (AOA), Uplink Time Difference of
Arrival (U-TDOA), and Assisted GPS (A-GPS) to ensure optimum accuracy,
latency, and yield across every type of environment and
condition--urban, suburban, rural, indoors, in-vehicle, in-motion and
stationary.

"TruePosition´s combination of U-TDOA and A-GPS provides the best
performance of any individual technology or any hybrid location
technology available today or in the foreseeable future," said Stephen
Stuut, CEO of TruePosition. "With this solution, TruePosition can
offer the performance and reliability that the public demands for
location-based services, especially for emergency calls where people´s
lives and property are often at stake."

The TruePosition Hybrid Location Solution can perform in two
different ways:

1. A-GPS and U-TDOA can be combined in a fallback arrangement, in
which the location system calls on one method when the performance of
the other has deteriorated due to environmental conditions. For
example, U-TDOA would be the operative method in urban areas and
indoors, where A-GPS produces lesser results or fails altogether.
Consequently, A-GPS would be selected in extreme rural areas where it
can produce very accurate results.

2. TruePosition can have two location technologies such as A-GPS
and U-TDOA operate simultaneously, and then mathematically combine the
calculations to obtain enhanced results. The combined location
calculations produce location estimates at substantially higher
accuracy than A-GPS or U-TDOA alone.

The TruePosition Hybrid Location Solution(TM) not only improves
the performance of A-GPS equipped mobiles in areas with marginal A-GPS
coverage, but supplies high-accuracy location in areas with no GPS
reception and to mobile phones without GPS capabilities.

About TruePosition

TruePosition (www.trueposition.com) is one of the world´s leading
providers of complete, wireless location solutions for the personal
and public safety and government security markets. The company´s
high-performance, turnkey and managed solutions include positioning
technologies, applications, integration services, and technical
support. These solutions meet demanding location requirements,
including U.S. E911 and other emergency calling directives worldwide.
TruePosition has two subsidiaries: Useful Networks, a location
aggregator, and Zoombak, a consumer applications developer. Founded in
1993 and headquartered in the Philadelphia, PA (USA) area,
TruePosition is owned by Liberty Media Corporation.