Technology Insights

Bluetooth CoD: Bluetooth Class of Device/Class of Service Explained

While testing some tools in Backtrack Linux I was working with some Bluetooth tools including btscanner, BlueProPro, bluediving, etc. and wanted to know more about the Bluetooth Class of Device/Class of Service also know as just Bluetooth CoD. Not only how it was formatted but also what exactly it meant and what it could tell me exactly about Bluetooth devices. In the end I feel I have a pretty good understanding of Bluetooth CoD and what it can tell you about various hardware devices even though it appears the standard for assigning CoD numbers is fairly loose most people appear to adhere to it somewhat. It should be noted that Bluetooth CoD is easily modified such as on Linux you can set it using hciconfig and thus could provide fasle information if you wanted to do so. Obviously not many people are going to understand this or know how to accomplish this so typically if you are scanning for Bluetooth devices you will be getting whatever the manufacturer has set when the item was manufactured. Below we describe more specifics about Bluetooth CoD including what the CoD hex means and some examples of Bluetooth CoD. Check out our Bluetooth Class list by clicking here.

Technology Insights

iPhone Visual Voicemail Not Working With iOS Beta 6

I updated my iPhone to iOS Beta 6 a couple weeks back and ever since I have not been receiving visual voicemail notifications. Initially I thought people were just not leaving me voicemails but once I finally called into voicemail by holding the number one on my iPhone keypad to check voicemail I realized I had 25 voicemails. Once they were all cleared out I moved on the trying to fix the visual voicemail issue which turns out is really easy to resolve by following the below steps.

Information Security

View iPhone Image Location Data With Preview On Mac OSX

Yesterday I wrote an article on viewing iPhone image GPS data via Photoshop on the Mac but since not everyone has the need to have Photoshop along with the fact that Photoshop is not cheap I also wanted to show a way to view iPhone image GPS data without having to install any third party software on your Mac.  You can easily view iPhone image GPS data using Preview which is installed by default on Mac OSX. Below I describe how to view iPhone image GPS data using the same example image from yesterday with Preview.

Information Security

View iPhone Image Location Data With Photoshop CS5

Yesterday I read an article on location data that is included with all images taken on your iPhone. This type of location data, which is also known as Geo Data or GPS Data, is included behind the scenes on all sorts of media that you create on a day to day basis so while I knew this and was familiar with the type of data that is included I had never spent much time looking into this data. Since I typically use Adobe Photoshop to edit images I figured I would start there and see how I can view location data for images taken on my iPhone within Photoshop CS5 which is the current version I am using.