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New social and personal dynamics are being created every day because of wireless. This book attempts to examine the practical exploitation of wireless networking. The projects here will help you get an understanding of the driving force behind the revolution...
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ISBN 0764558943

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New World Record for Bluetooth Link!
Posted by Mike on Friday, July 30th, 2004 @ 02:05 pm [News]
1 Kilometer Link

Bluedriving at extreme range - 1 kilometer file transfer.

The date: Wednesday, July 28th 2004
The time: 12:00 PM PDT
The test: Connect to a low-power Bluetooth cellphone from a distance of 1 kilometer

The result: Success!

On a sunny afternoon in California, author Mike Outmesguine and John Hering and James Burgess from Flexilis ventured outside to experiment with a high-gain antenna connected to a Class 1 Bluetooth adapter kit from The plan was to connect to a Class 3 cell phone and attempt to transfer a file over the air at an extreme range of 1 kilometer (about 3,300 feet).

Phone on top of hill

Using a 19 dBi panel antenna, a Linksys USB Class 1 adapter sporting a pigtail mod, and a Sony laptop with the default Widcomm drivers, the Bluedrivers transferred a picture file from a Sony-Ericsson T610 using the phone's built-in Obex file transfer protocol.

The devices were paired prior to the long-distance test. This was not an example of a bluetooth attack, but it's clear that long distance attacks are now possible.

Transferred fileThree files were copied off of the device during the test. Two files had been copied previously, while one file had never been transferred until this test to ensure it was a true FTP over-the-air transfer.

The test was organized from two sides, Side A (the highest easily accesible point in the region, at the top of a local landmark called the A hill) and side B (car parked on side of road). Side A placed a person with the cellphone in visual line of sight with the Side B. Side B consisted of the high-gain antenna connected to the laptop USB adapter. One person operated the laptop (mainly by pressing F5 to refresh the Bluetooth FTP list and selecting files to transfer), while another person held the high-gain antenna aimed at the top of the A hill.

Bluedriving Mod

The equipment is essentially off-the-shelf and easily available. While components are available from stores like Fry's and Radio Shack, sells the equipment in kit form. With a slight cable modification, this test shows that, based on previous research inthe area, bluetooth functions (and exploits) can now be performed from distances thought to be impossible. A cell phone bluetooth device was not thought to have enough power to traverse distances greater than a few dozen feet.

Phone as is

A typical unmodified cell phone can be reached at a distance of one kilometer by using slightly modified equipment on only one side of the link. Imagine the possibilities with modifications on both ends of the link!

  Holy crap, it hasn't hit yet, look out for Slashdot.

Posted by: Pot Smoker on Friday, July 30th, 2004 @ 07:00 pm

  frist post!!

Posted by: fp! on Friday, July 30th, 2004 @ 07:03 pm

  Awesome! Imagine the possibilities with a Bluetooth mouse and keyboard paired with a computer attached to a Jumbotron display!

Posted by: Wysz on Friday, July 30th, 2004 @ 07:07 pm

  sweet! I just got that phone... /me looks for a way to install external antenna on laptop's built-in bluetooth

Posted by: wolrahnaes on Friday, July 30th, 2004 @ 07:10 pm

  ooh wee...

Posted by: freeloadin' phreddie on Friday, July 30th, 2004 @ 07:16 pm

  Looks like I'll soon be able to control my AirPort Express from work... :D

Posted by: Travis Walls on Friday, July 30th, 2004 @ 07:19 pm

  Sweetness. Now I gotta rig up my own unit. Every hip person in Dallas will have my contact info!

Posted by: YourTechSupport on Friday, July 30th, 2004 @ 07:34 pm

  Hevoset syövät heinää. Hevoset syövät kolmasti päivässä. Hevosen mahalaukku on melko pieni, eikä se pysty ahtamaan kerralla paljon ruokaa.

Posted by: ^AS&D*(H on Friday, July 30th, 2004 @ 08:37 pm

  Uh, it's actually "site" not "side", but thanks for the info - I have a T610 and I'm impressed

Posted by: Curt on Friday, July 30th, 2004 @ 09:01 pm

  But what are the practical applications of this? I understand the gee-whiz factor but is there an advantage to being able to transfer files wirelessly from over 1km away? And do any of these devices run Linux?

Posted by: TurkBack on Friday, July 30th, 2004 @ 09:12 pm

  Why would running linux help? I am failing to see how any particular OS would make things better as this is a Layer 1 (Link) networking accomplishment. And i don't think it would have been that hard as bluetooth is just 2.4Ghz. wo0pede doo. But great job and wonderful accomplishment. I can't wait to see wait other ideas come out of this. What was your total EIRP, dbm, and mW?

Posted by: xEon on Friday, July 30th, 2004 @ 09:30 pm

  xEon: YHBT. YHL. HAND.

Posted by: haha on Saturday, July 31st, 2004 @ 12:06 am

  Good job - and don't forget to switch off bluetooth when you dont't need it.

Posted by: burned on Saturday, July 31st, 2004 @ 01:35 am

  Hmm, and it was done on a t610, i have that phone and love it!

Posted by: Alex on Saturday, July 31st, 2004 @ 01:45 am

  dumbass said: "Why would running linux help? I am failing to see how any particular OS would make things better as this is a Layer 1 (Link) networking accomplishment." nowhere in Turkbak's post did it imply that Linux would help. are you a straight up, class A retard? k.

Posted by: n3tfury on Saturday, July 31st, 2004 @ 02:11 am

  As Bluetooth becomes more popular in a wider range of applications, generally due to its lower cost over Wi-Fi, longer range will become more valuable. One example could be a Bluetooth headset that works further than the rated 20-30 feet. -- It's also notable that this is a one-sided hack. The phone was off-the-shelf, built-in Bluetooth. By connecting to the phone from a great distance, any Bluetooth service could be performed (or exploited.) -- As for Linux vs. Windows, we performed this test using the Linksys Windows drivers (by Widcomm). We have also worked with Linux, but OS is unimportant for the actual link. -- Oh, and btw: Let's try to keep the comments sane - this is a family site. Thx.

Posted by: Mike O on Saturday, July 31st, 2004 @ 04:28 am

  first post!

Posted by: taco on Saturday, July 31st, 2004 @ 10:29 am

  ROCK ON!!! :P~ :))))))

Posted by: Anonymous on Sunday, August 1st, 2004 @ 01:50 am

  Rox!, muito bala essa matéria. Imagino aqui, no nordeste brasileiro, um teste feito nestas proporções e com esses resultados!

Posted by: Alex Canuto on Monday, August 2nd, 2004 @ 03:13 pm

  Looks like we'll all be able to control Travis' Airport from work. Blimey.

Posted by: Sageofsurbiton on Wednesday, August 4th, 2004 @ 01:27 am

  Syövätkö Suomalaiset heinää...?

Posted by: Anonymous on Wednesday, August 4th, 2004 @ 06:08 am

  blimey this is every bluejackers dream come true :-)

Posted by: on Thursday, August 5th, 2004 @ 03:01 pm

  OoOoOoO now i need to find a way to boost the power of a t610 so i can increase the range without a laptop!!! like attaching a huge antenna and a car battery :p

Posted by: Kristofa on Saturday, August 7th, 2004 @ 07:38 am

  What kind of Field of view does it have ? ie if I wanted say 100ft through walls how accurately would I have to "aim" the antennae to get a signal ? I am just looking to be able to BT my zodiac to my pc from anywhere in the house (right now ALMOST anywhere in my room is all I get :-)

Posted by: Chris Taylor on Sunday, August 8th, 2004 @ 09:36 am

  For additional range inside the house, I would recommend trying a Class 1 adapter like the Linksys we used. These put out up to 50 mw of power. Additionally, with a USB, you can place the adapter higher up on your desk - the higher the better usually. And finally, you can mod the adapter with a kit from and add, perhaps, a 9 dBi antenna mounted on the wall.

Posted by: Mike O on Sunday, August 8th, 2004 @ 04:25 pm

  Wow! Can this be done with other stuff like headsets or keyboards or just phone to laptop? Imagine if every Bluetooth enabled product had this kind of range. Awesome.

Posted by: Syd on Sunday, August 8th, 2004 @ 05:20 pm

  Where can i find the program and the usb cable and the antenna. I live in greece. Thanks!!!

Posted by: george on Monday, August 9th, 2004 @ 08:04 am

  How fast was the file transfer?

Posted by: poit on Tuesday, August 10th, 2004 @ 04:04 pm

  This 1km long distance link (and the later 1.08 mile link) did not use a special program for the *connection*. A Bluetooth scanning program is available from We used the Widcomm driver supplied with the Linksys adapter in Windows XP Pro. Connection speed was at the same Bluetooth speed we observed at short range (about 700 kbps.)

Posted by: Mike O. on Tuesday, August 10th, 2004 @ 04:45 pm

  Can this be done palm t3 to palm t3?

Posted by: Sims on Thursday, September 16th, 2004 @ 02:16 pm

  I think it will work from any Bluetooth platform. The distance will be limited to the type of antenna you are using (add-on modification, not the built-in) and the power output on the device. The Palm T3 is pretty low power, and would need to be modified to beam a signal from one to the other across a great distance. Though a Laptop to Palm should work across at least 1km.

Posted by: Mike O on Monday, September 20th, 2004 @ 04:21 pm

  Where do I get the kit. The website seems closed for maintenance or something. Also, what kind of money do I need to dish out to perform this atenna mod on my linksys usb adapter ? BTW, great stuff guys, congrats !

Posted by: Erick T. on Friday, October 1st, 2004 @ 06:52 am

  The record is about to fall. There will be a record atempt of 4 km in norway during next week. There is a thread about it here: If successfull, there may be written an article about the new record at this page:

Posted by: Simen1 on Sunday, October 17th, 2004 @ 05:15 am

  Is it about to fall? Oh, you guys are great! Look at that big antenna. Oh dear. How, original... And the thread was in Norwegian.

Posted by: simen2 on Monday, October 25th, 2004 @ 03:01 pm

  buena idea, aqui estoy admirado. sigan trabajando que la gente espera mejores avances, porque la comunicacion es lo mejor. desde Peru. Rafael

Posted by: Rafael on Wednesday, October 27th, 2004 @ 09:54 am

  Bluesnarfing at 1,33miles This 2,125km long distance link did not use a special program for the *connection*. We used the Widcomm driver supplied with the MSI adapter in Windows XP Pro. Connection speed was at the same Bluetooth speed we observed at short range (about 700 kbps.) The phone in the other end was a K700i. The distance was confirmed using GPS.

Posted by: Eddie Torres on Tuesday, November 2nd, 2004 @ 09:09 am Just think, go to: and get a 8.5 db gain 20 inch whip and connect to this lil 500 mw linear and you can probably go 10 miles with bluetooth all for under $200

Posted by: steve on Monday, November 8th, 2004 @ 06:16 pm

  mqma li na balgarski tyka be i az da pro4eta ne6to

Posted by: `B`L`E`I`D`A`R` on Thursday, December 23rd, 2004 @ 04:34 am

  super de 1km tva e straxotno az imam k700i ako moga i az da osa6testvq takava vrazka 6te se kefq mnogo!!!!!!!!

Posted by: `B`L`E`I`D`A`R` on Thursday, December 23rd, 2004 @ 04:36 am

  Cool :) Does anyone tried to extend range of Bluetooth connection by putting phone to focal point of parabolic dish?

Posted by: dj-bobr on Thursday, January 6th, 2005 @ 03:52 pm

  My interest is to use as in home entertainment/distribution/control. I have had my computer (analog) audio and video patched to my home entertainment system for years. And I have that system available on all my TVs via a simple MTS signal over a single coax. Extending the bluetooth range would allow me whole house control of the system (and surfing) with off the shelf parts. Anybody tried connecting this external antenna to an iMac G5 internal bluetooth yet ? thanks

Posted by: steve on Tuesday, February 1st, 2005 @ 02:28 pm

  Has anybody heard of a program that would allow for a bluetooth adaptor (like in my iPaq h2210 and my Tungsten T5) to pick up on WiFi signals? They all use the 2.4 GHz range, so I'd imagne that this would be feasible...

Posted by: Patrick on Monday, February 14th, 2005 @ 01:57 pm

  there is not such program. wifi and bluetooth have different hardwares..

Posted by: stony drifter on Friday, February 18th, 2005 @ 05:09 am

  I hope someone from HAARP posts to show you guys how its really done.

Posted by: Anonymous on Wednesday, February 23rd, 2005 @ 11:52 pm

  holly shit

Posted by: ranza on Tuesday, March 1st, 2005 @ 05:59 am

  Kyllä. Suomalaiset syövät heinää, mutta useimmat puivat netissä puuta heinää. Yes. Tremendous work You´ve done boys and girls;)

Posted by: marko on Monday, March 21st, 2005 @ 07:29 am

  I read about similar things done for WiFi, like 10km LOS. I think it was wow... Imagine the guys who made bluetooth are probably like, "NOO!!! Bluetooth is meant for SHORT range!" Next thing you know, NASA leaves a T610 (with solar battery charger) on the moon so like anybody with a few spare bucks can connect to it and see pictures taken with its camera.... "live feed from the moon!"

Posted by: Flyashi on Monday, May 16th, 2005 @ 08:03 pm

  The moon is aprox 385,000km from earth ... - 1km bluetooth, sure. - 385,000km bluetooth, not going to happen.

Posted by: Chris Lee on Thursday, May 26th, 2005 @ 07:44 pm

  It was a joke, Chris. But thanks for pointing that out.

Posted by: Flyashi on Wednesday, June 1st, 2005 @ 11:34 am

  As the Kiwi madmen behind that celebrated USB WiFi cookware antenna mentioned above, we just HAD to push our parabolic scoops into a similar Bluetooth quest. Folks - it couldn't be easier with USB. Just swap out the WiFi dongle for a BT one, & run some BT device finding program. In fact we really wish a Bluestumbler equiv. of Netstumbler existed. Any such BT survey program around yet ? See our modest "down the street" effort => , with a Dell Axim & Socket CF at the "walkabout" end. Stan in NZ

Posted by: manuka on Sunday, June 12th, 2005 @ 01:48 am

  I need to calculate distances between a roaming point and various fixed points, using bluetooth!+/- 200meters apart. I need technology advice and distance calculation advice? Thanks

Posted by: Werner on Thursday, June 23rd, 2005 @ 12:18 pm

  Can this be done omnidirectionally??? Or is it just directional?

Posted by: Frogger on Tuesday, June 28th, 2005 @ 01:37 pm

  same i need da program 2.can sumbody email it,if they hav it :)

Posted by: Abe on Wednesday, June 29th, 2005 @ 02:00 am

  QUOTE: Why would running Linux help? Linux is: Free Stable Secure Easily fixed. has live automatic updates Bluetooth stacks: Microsoft has its own stack, which works exclusively on Microsoft. All other operating systems have a deeper stack. ===================== To make the point a little clearer. A few years ago, some guys in England loaded Windows NT on to a Linux machine and surprisingly enough NT actually work better If you want the freedom, to do what you like and how you like, then that is a good reason why you would run Linux.

Posted by: John on Thursday, July 7th, 2005 @ 01:18 am

  i wonder-- is there an adapter so a wifi signal could be used on a blue tooth device? what i mean is...a pda with blue tooth connects to an adapter which connect to wifi at hotspot. for those of use w/o the $ to buy a wifi enabled pda/phone. any clues?

Posted by: badman on Tuesday, July 26th, 2005 @ 08:18 pm

  Wow, Can this reduce the cost of internet deploying? uses blue tooth instead of WIFI or other wireless broad bad? heheh normally equipment cost in my country 600 $ for a simple wireless broad band.... now it can be replace by a blue tooth with 30$ that's kooo

Posted by: Borin on Monday, August 22nd, 2005 @ 11:58 pm

  sweetness i have been only able to extend my ngage to 100 metres from the normal range do you reckon that you ccould email me with some cheap and easy ideas i could rigg up with just stuff u could get from like tandys? im also into blue jacking and hacking and if anyone has any questions or cool things they have figureed out tell me i also love trading bluetooth hackin programs email me... kk

Posted by: mundine on Saturday, August 27th, 2005 @ 03:57 am

  I want to know if somehow I could get a adaptor or some device which can connect to my sony ericsson p910a and I could get wifi on my cell.

Posted by: Ansh on Friday, September 2nd, 2005 @ 09:53 am

  You can increase range with antennas and power, but Bluetooth protocol has a timing requirement that limits connections to about 3 km. There is a 20 us tolerance allowed for a slave to respond in the next time slot after the master. This equates to the propagation delay of about 6 km round trip. Wi-Fi has longer tolerances and allows longer distances.

Posted by: Geoffw on Monday, September 12th, 2005 @ 12:07 pm

  I would like to connect to computers wireless.what is the cheapest and best option. Thanks

Posted by: Feroze on Friday, September 23rd, 2005 @ 10:28 am

New comments have been disabled until further notice.

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