Amazon (Murtuza Attarwala): Would recommend this book to anyone who is actively working with Location Based Services, or is planning on working with Location Based Services. The initial sections of the book gives comprehensive use cases, where location based services are/can be used. The author then goes into the details of different technologies that are out there in the market that can be used to implement these services. For each technology, the author first describes the technology and then discusses the pros/cons of using that technology to implement the solution. These gives a very good idea, of what technology should be used from the cost/technical perspective for a particular solution. For e.g. what is the expected responsiveness of RTLS for your particular solution, what is the accuracy that you desire, is it room-level or is zone-level good enough, how big a tag is acceptable for your solution, what is the expected battery life of the tag. This book is a must read for anyone interested in Location based services.

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Tradetang.com: Portable GPS/GSM/GPRS tracker with two way talking communication function for elder person

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http://www.pakistantimes.net/: General packet radio switching (GPRS) is a Mobile Data Service available to users of Global System for Mobile Communications (GSM) and IS-136 mobile phones. General Packet Radio Service data transfer is typically charged per megabyte of transferred data, while data communication via traditional circuit switching is billed per minute of connection time, independent of whether the user has actually transferred data or has been in an idle state. GPRS can be used for services such as Wireless Application Protocol (WAP) access, Short Message Service (SMS), Multimedia Messaging Service (MMS), and for Internet communication services such as email and World Wide Web access. GPRS is packet-switched, which means that multiple users share the same transmission channel, only transmitting when they have data to send. Thus the total available bandwidth can be immediately dedicated to those users who are actually sending at any given moment, providing higher use where users only send or receive data intermittently.

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UKPRwire: The latest M2M GSM modules from TDC offer higher performance, lower power consumption and a smaller overall size whilst retaining full software and plug compatibility with the existing modules

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Market Watch: Location Based Technologies, Inc. designs and develops personal locator devices and services. We are the developer of the PocketFinder(R) Family of Products and the PocketFinder(R) Network. The PocketFinder(R) Family of Products currently includes the PocketFinder(R), PetFinder(R) and PocketFinder(R) Luggage. The PocketFinder(R) is a small location device that enables a user to locate a device, person, or pet, anytime from almost anywhere. PocketFinder(R) Personal Locator devices are completely wireless. Users can monitor the safety and location of family members, pets, and valuables using GPS and GPRS technologies.

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