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Old 08-03-2009, 01:41 PM   #204
smariot
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Originally Posted by them View Post
The information is stored on the chip & can only be read once the chip has been recovered. Take my word for it.. if you can't be motivated to research the issue properly.
Well, how does this work?

Well, there's the problem of powering the thing. Almost all RFID tags depend entirely on the reader to get the power they need to function.

And more over, these things are used for identification, and have very limited memory and computing power. How are you going to program one to record and store the fish's position over time.

And if water absorbs radio and microwave energy, how can it receive anything from a GPS satellite to even know where the fish has been? [Edit: You said by tracking day length. I suppose if the thing included a clock, that could be plausible.]

And lastly, if these things can record a persons position over time, and then dump all that information to a reader when the person does finally come in range of one, then saying 'they can only know where you are if you're near a reader' is false. They can know where you are wherever you are, there is just a latency defined by how often you come in contact with a reader.

Whatever the chips in the fish are doing, it is obviously beyond the scope of traditional RFID, and as such, shouldn't be referred to as RFID.
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Last edited by smariot; 08-03-2009 at 01:48 PM.
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