DiscussWorldIssues - Socio-Economic Religion and Political Uncensored Debate - View Single Post - Texas Students required to wear RFID Name Tags in two San Antonio Schools

**Ltftujkg** · 09-02-2012, 07:32 PM

If it's powered by control unit like Dangermoose said, the range in huge.

Kind of, the range is technically infinite as long as there is a network of control units. The RFID unit (unless powered or otherwise active) has a pretty limited range. Ours work to about 20cm because we need them to do that. I think they will go to about 6 feet with the type we use. The problem is that the wider the range, the more transactions you have to complete in a given time-frame. I can't go into any further detail of how our system internals work I'm afraid.

If anyone wants to pick me up on some missing details, I'm being deliberately vague.

--- Post Update ---

So you're saying it's not possible to track the tags from off school grounds?

Not with these kind of RFID tags. Once you are outside the network of control units the RFID bounce-back means nothing.

09-02-2012, 07:32 PM	#48
Ltftujkg Join Date Oct 2005 Posts 443 Senior Member	If it's powered by control unit like Dangermoose said, the range in huge. Kind of, the range is technically infinite as long as there is a network of control units. The RFID unit (unless powered or otherwise active) has a pretty limited range. Ours work to about 20cm because we need them to do that. I think they will go to about 6 feet with the type we use. The problem is that the wider the range, the more transactions you have to complete in a given time-frame. I can't go into any further detail of how our system internals work I'm afraid. If anyone wants to pick me up on some missing details, I'm being deliberately vague. --- Post Update --- So you're saying it's not possible to track the tags from off school grounds? Not with these kind of RFID tags. Once you are outside the network of control units the RFID bounce-back means nothing.
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