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Subject: Anything better than barcodes for tracking product?

Date: 01/14/03 at 7:09 AM
Posted by: Martin C
E-mail: martin.chantler1@btopenworld.com
Message Posted:

I work for an electronics company and I have written a computer system to implement serial tracking of pcb's through smt, inspection, test, unit assy, unit test, despatch, etc
This constructs a pcb history, and collects fault and yield data

We currently use barcoding to scan boards through the system - this is ok, but isn't the most efficient solution
Scanning the barcode involves removing the board from its anti-stat bag and locating the barcode
This can be time consuming

What would be better would be some kind of 'transponder' that sits on the board, and stores the serial number, which a special reader could scan when in proximity of the pcb

Is there anything like this around?

Ideally the transponder would be passive, small, able to withstand smt and solder reflow temperatures and not interfere with the electronic devices

Cost is also a factor, there is very little budget at the moment, in fact almost none so I was thinking of building a prototype myself to prove the principal
Does anyone have any ideas for how it could work???


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