Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror

Comment Re:Lots of countries have this (Score 2, Informative) 60

<quote>Except that as you said, the chip is passive, and completely unpowered, so the scanner emits a signal enough to power up an integrated fucking circuit <b>and</b> make it transmit back. Microwave ovens should be closed for a reason.

Oh, you thought the chip itself was harmful?</quote>

Who mentioned microwaves? RFID isn't a microwave technology, it's a radio technology. Hence the frickin name.

A microwave oven is closed because a standing wave is required to get the power level needed to cook, not because a loose magnetron (aka microwave generator) is particularly harmful.

The complaints about RFID passports near genitals suggest that people think that the chips are harmful. I disagree.

The RFID chips need milliwatts of power (if not less), they are TINY after all. RFID readers need little enough power that they can be battery powered. See: vet's handheld animal id tag scanners. And THOSE are powerful enough to penetrate flesh. A scanner for a passport chip wouldn't need to be as powerful, so would most likely be even weaker.

Your car keys (if you have radio button ones) are more powerful than an ordinary RFID tag or reader. They can go through metal from tens of feet away, passive RFID tags aren't read from more than two feet and not through metal. I can't remember people worrying about the radio waves from them. Or how about Wii controllers? Or wireless keyboards and mice? Especially the keyboards, placed on your lap/genitals to use!

It's all bullcrap media scaring people about crap they know nothing about.

Comment Re:Lots of countries have this (Score 4, Interesting) 60

Except that as you said, the chip is passive, and completely <i>unpowered</i> unless it is being scanned, because it gets its power from the scanner. And because of that, they can't transmit with more power than they are getting from the scanning field.

Which makes them entirely non-dangerous normally, and less dangerous than the field that scans them when they are being scanned.

I'd stop worrying, especially as the (official) scanners are so short range that you have to take your passport out of your pocket (and away from your genitals) for it to be read, so your genitals would never actually be exposed to the RFID chip's radio broadcast.

Comment Re:Actually we did explain it. (Score 4, Informative) 321

Well if you simply read chunks from one file and write them to the destination you end up with all sorts of interesting effects happening.

e.g.: Flooding memory with queued writes and making the OS page as a result.
Or queued writes causing your copy operation to be "complete" on the UI before the writing actually finishes. (XP suffers from this quite badly, a copy can be going for a good 5-10 seconds after the window closes)
Or the opposite, when copying lots of small files, insisting on fully closing the previous file before opening the next to avoid the previous bug, causing an additional ~5ms read seek (depending on media) between each copy. (Pre-SP1 Vista's problem IIUC*).

*IIUC: If I Understand/Understood Correctly.

Comment Re:Is it just me... (Score 1) 225

It has a really screwed font tag (below) round about the first line of the specs. IE and opera seem to just be skipping the two "<" between the first "<" and the first ">", where firefox is assuming that there should be a ">" before each "<". It's closed as if it was just one font tag.

<font face="Times" Roman New NewOutdoor Indoor lighting < font color="#ffffff" width="100%" colSpan="2" <TD>

Comment Re:Pro-MS press?!?!? (Score 1) 993

I wouldn't call their C++ support 3rd class to the other languages.

You should look at the list of features added to the C++ compiler and debugger since VC6.
The big compiler features that springs to mind are multithreaded compiling and profile-guided optimisation, but there are others.
Not forgetting built-in support for OpenMP.
Or the x86-64 Compiler and Debugger.

Edit and Continue. OMG is this nice to have.
I'm not sure whether VC6 allowed as complex expressions in the debugger as the modern VC++, e.g. calling user functions. I know VC++2003 couldn't understand casting something to a pointer to pointer to something, reacting with a "multiply what now?" error, but VC++2005 gets it.

It's not like they can add new things to the standard library like they can with their own languages.

Comment Re:Gold selling is a good idea (Score 1) 424

No legal recourse, but it is still immoral to take advantage of another's mistake, hence the law existing in the first place (even though it assumes a human needs to approve the sale, and not an entirely automated system).

EVE Online puts up a warning message if your selling/buying price is outside of a certain percentage of the recent average buy/sell prices, to try to stop you making mistakes. I think other games should try to adopt this, although with items with random bonuses in a lot of fantasy games it might be more difficult to automatically determine a market price.

Comment Re:Gold selling is a good idea (Score 1) 424

No, under UK law a price isn't a binding contract, if it is a mistake the seller isn't obligated to make the sale. For an automated system, such as online sales, the order can be cancelled (and any money paid refunded) if the price is found to be incorrect, as long as the item has not yet been dispatched. Not sure if it can be applied to purchases of virtual goods, as once delivered the sale contract is considered complete and the law no longer applies.

Buying and reselling is of course legal.

If the price is well below market value and the seller is happy with it, it is both legal and moral to buy it and resell at a higher price. It is only if the price is a mistake that it is immoral.

Slashdot Top Deals

A fail-safe circuit will destroy others. -- Klipstein

Working...