Mathieu AUBERTEmilie POCCIOLI

Pierre SCHAMBACHER

Weakness of bar code : Limit of supply chain speed : product by product No global vision

Apparition of RFID : identification method Composed of RFID readers and tags Used in many domains

RFID advantages Retrieve data remotely (up to hundred of meters) Can read multiple tags simultaneously

RFID weakness Price Air collision

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Reader #47

Reader #63

Tag #12 detected by Reader #47

Tag #12 detected by Reader #63

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RFID imposes many needs and constraints

Devices heterogeneity

Read/Write to a tag

Manage gathered data

Air collision

A set up of external sensors to trigger readers

False positive, false negative

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Reader #47

Reader #63

Tag #12 detected by Reader #47

Tag #34 detected by Reader #47

False negative

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Reader #47

Reader #63

Tag #493818 detected by Reader #47

False positive

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Open source RFID software platform Last release in July 2008 FOSSTRAK project provides the core components

of many RFID system deployments Composed of 3 modules :

Each module is based on EPCGlobal standard and can be used independently

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RFID readers

Reader modules

Reader #47

Reader #63

Cartridge appears in warehouse

Cartridge moves from warehouse

to dock n° 3

Tag #57

Printer present in warehouse

False negative

suppressed

False positive suppressed

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Lots of logistical domains Warehouses Big or little shops Mailing companies (see colissimo in France)

Gates monitoring RFID tags at Polytech’Nice Marina surveillance

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Advantages Hide the complexity and the heterogeneity of the

hardware part Avoid false positive and false negative Get intelligible data Ideal to start a business aplication

Problems RFID problems Gates issues Missing information

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Two kinds : Full middleware Part of middleware

Full : Singularity (J2EE)

Part : RIFIDI (Java) LLRP Toolkit (C/C++/C#/Java…)

None is as complete as Fosstrak

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FOSSTRAK seems to be a good implementation Composed of 3 parts Reusable

Major problems are constants of RFID tags

A great way to make developer focus on business routine and not on RFID technology

Nice start point to work on RFID issues

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