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  Reader Collision and Tag Payoff Matrix Resulting in a Wal-Mart RFID  
  Authors : Apoorva Arora; Sonali Gupta; Umesh Sehgal
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Radio-frequency identification (RFID) tags and tag readers make use of proximity and have automated ad hoc setup for transferring small amounts of information. The key features of the RFID tag are a fixed unique identifier and necessary proximity of tags to a tag reader. However, some kinds of RFID tags exist that cycle through a predefined list of identifiers. Also some manufacturers have developed RFID tags that are compatible with WiFi networks to extend location tracking to a whole WiFi network, avoiding the need for an extra tracking network. The cheapest variety of RFID tags are called passive, although 'reactive' would be a better term, because they draw their power to transmit from the radio signal of the tag reader. They are commonly used for tracking the movement of objects, typically at distances of up to a few metres, but potentially up to 200 metres with 'active' or 'semi-active' tags i.e. with their own power source. RFID tags are also widely used to control and monitor access through door and gate entry systems and to 'tag' animals and occasionally people. They are increasingly being used in asset tracking and security applications. The ability to add a unique identifier to objects that can be tracked is very useful and should lead to further innovations, especially in combination with other technologies.


Published In : IJCSN Journal Volume 8, Issue 2

Date of Publication : April 2019

Pages : 154-156

Figures :01

Tables : --


Apoorva Arora : Chandigarh Engineering College, Landran.

Sonali Gupta : Chandigarh Engineering College, Landran.

Umesh Sehgal : Chandigarh Engineering College, Landran.





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