Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




1332 posts

Uber Geek
+1 received by user: 152
Inactive user


Topic # 113699 24-Jan-2013 22:11
Send private message

I saw this article and was interested in what others might think about it.

The article specifically states:

"The Bluetooth Address collected is not related to a specific device or an individual."

Which piqued my interest as I thought any sort of analysis between two points would require information relating to a particular device be collected, would it not?

Blip Systems' YouTube video shows that analysis of a particular Bluetooth device is measured between two points and the data is stored on a server and that data presented to the people collecting it.

Surely this is not a good idea, given that Google were recently stopped from doing pretty much the same thing globally with Wi-Fi network data.

The obvious response is, of course, "turn off your Bluetooth" but I think this is a case of implementing something wrong then telling people they can opt out.

Create new topic
BDFL - Memuneh
58730 posts

Uber Geek
+1 received by user: 10122

Administrator
Trusted
Geekzone
Subscriber

  Reply # 750462 24-Jan-2013 22:16
Send private message

Google's collection of WiFi data was different in that it was collecting a lot more than AP MAC addresses, location and strength. It was collecting payloads as well.

The only information required in this case is a device identifier. The device id is encrypted and stored. You only need the encrypted device id for comparison in two points, nothing else. There's nothing saying "this device id belongs to such individual".





2560 posts

Uber Geek
+1 received by user: 368


  Reply # 750464 24-Jan-2013 22:17
Send private message

I gyess it can identify unique devices but cannot tell who the device belongs to. 

I wonder if your have your bluetooth device hidden, which I do, if the system can see those devices?




Jolla C
Nokia N1
Nokia N9
Nokia E7
HP Touchpad
Dell Inspiron 14z i5


 
 
 
 


2 posts

Wannabe Geek

Trusted
BLIP Systems

  Reply # 750477 24-Jan-2013 23:10
Send private message

Hi!

I´m the Marketing Coordinator at BLIP Systems and will be more than happy to answer any questions concerning Bluetooth tracking.

For Bluetooth privacy concerns we have made this document:

http://issuu.com/blipsystems/docs/bluetooth_tracking_privacy_concerns

Please let me know what you think!

Regards,
Christian



1332 posts

Uber Geek
+1 received by user: 152
Inactive user


  Reply # 750875 25-Jan-2013 16:53
Send private message

BlipTrack: Hi!

I´m the Marketing Coordinator at BLIP Systems and will be more than happy to answer any questions concerning Bluetooth tracking.

For Bluetooth privacy concerns we have made this document:

http://issuu.com/blipsystems/docs/bluetooth_tracking_privacy_concerns

Please let me know what you think!

Regards,
Christian


Thanks for the reply, your link was most informative. The article posted at GeekZone, strictly speaking, is incorrect regarding the collection of device specific data (which is why I decided to investigate further) but of course this in no way translates into personally identifying data.

Do Beca/Blip Systems possess the necessary capability to decrypt the MAC address hashes at a later date for the purpose of, for example, law enforcement?

Re-hashing the original hash daily is a nice touch, I will admit. Good on ya ;-)

2686 posts

Uber Geek
+1 received by user: 1134


  Reply # 750882 25-Jan-2013 16:58
Send private message

Ah...the paranoid brigade starts again. Quick everyone, put your tin foil hats on! Lol





Always be yourself, unless you can be Batman, then always be the Batman



2 posts

Wannabe Geek

Trusted
BLIP Systems

  Reply # 750945 25-Jan-2013 20:21
Send private message

Dear 1080P

No, it is not possible to revert hash codes back to Bluetooth, when using a SHA-256 algorithm*.
* SHA-256 algorithm generates an almost-unique, fixed size 256-bit (32-byte) hash. This makes it suitable for password validation, challenge hash authentication, anti-tamper, digital signatures.

Regards,
Christian



1304 posts

Uber Geek
+1 received by user: 461


  Reply # 751043 25-Jan-2013 23:46
Send private message

Okay so I'm going to act paranoid here. :P

You don't need to decrypt the hashes, you just need too find which mac address generates which hash.

There's only 2^48 unique mac addresses out there. Less if you know which brand of Bluetooth chipset your target uses.

You can do 65 million sha256 hashes per second on a $200 GPU

2^48 / 65000000 = 4.3 x 10^6 seconds = 50 days

If you to buy a bunch of GPUs, then you can calculate the hash for each possible mac address with the daily salt every day. Right?

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

FUJIFILM introduces X-E3 mirrorless camera with wireless connectivity
Posted 18-Sep-2017 13:53


Vodafone announces new plans with bigger data bundles
Posted 15-Sep-2017 10:51


Skinny launches phone with support for te reo Maori
Posted 14-Sep-2017 08:39


If Vodafone dropping mail worries you, you’re doing online wrong
Posted 11-Sep-2017 13:54


Vodafone New Zealand deploy live 400 gigabit system
Posted 11-Sep-2017 11:07


OPPO camera phones now available at PB Tech
Posted 11-Sep-2017 09:56


Norton Wi-Fi Privacy — Easy, flawed VPN
Posted 11-Sep-2017 09:48


Lenovo reveals new ThinkPad A Series
Posted 8-Sep-2017 14:37


Huawei passes Apple for the first time to capture the second spot globally
Posted 8-Sep-2017 10:45


Vodafone initiative enhances te reo Maori pronunciation on Google Maps
Posted 8-Sep-2017 10:40


Voyager Internet expand local internet phone services company with Conversant acquisition
Posted 6-Sep-2017 18:27


NOW Expands in to Tauranga
Posted 5-Sep-2017 18:16


Windows 10 Fall Creators Update coming Oct. 17
Posted 4-Sep-2017 14:10


Garmin introduce Garmin vivoactive 3
Posted 1-Sep-2017 18:38


Kiwibank wastes $90 million on software – Reseller News
Posted 1-Sep-2017 13:45



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.