The accuracy and reliability of tracking and locating is increased by
using a unique combination of at least two locating technologies. This
may be done while reducing the costs for achieving a given level of
accuracy and reliability, leveraging existing standard technologies,
delivering room level location accuracy, providing choke point
capabilities, providing RTLS capability minimizing additional
infrastructure costs and maintenance costs, and/or increasing battery
life of tags. Information for locating a tag within a region, the region
including a plurality of zone or boundary identifier transmitters and a
plurality of access points may be combined by (a) receiving by the tag,
from one of the zone or boundary identifier transmitters, a zone or
boundary identifier, (b) transmitting by the tag, information identifying
the zone or boundary identifier and a tag identifier associated with the
tag, over at least two channels, (c) receiving, by at least two of the
access points, the information identifying the zone or boundary
identifier and a tag identifier associated with the tag, transmitted by
the tag, (d) transmitting, by each of the at least two access points, the
information identifying the zone or boundary identifier and a tag
identifier associated with the tag, as well as secondary information for
use in deriving a location of the tag, and (e) storing the zone or
boundary identifier and the tag identifier associated with the tag, and
the secondary information, in association with one another.