A large part of our work depends on data stored in computers, laptops and even iPods. The iPod is a great device that revolutionized the music industry. Apple's sleek digital audio device is one of the world's most successful tech gadgets that crossed whopping sales of more than 3 million units since the year 2001. By making the iPod so tremendously user-friendly, this device has more a customer base of millions and millions of consumers from all over the world. The iPod makes it legal for consumers to access legal music on demand for just a dollar for every song. This means you don't have to go to the store to buy a CD for $15. You can listen to it on your iPod. This is how the iPod became a household name. But from a security perspective, the iPod hasn't created a good impression at all. Thus, the future of iPods doesn't look too bright. Most gadgets like the iPod, when used by professionals, pose serious and severe risks in the context of organizational security and data loss. Thus, it is now an established fact that when gadgets such as iPods are connected to a work PC, this can be extremely risky.

A malicious code can easily enter the corporate network and remain undetected by the intrusion detection software or the corporate network's firewall system. Another danger is that the iPod can work as a USB mass storage device and can serve the same role as a USB pen drive so it does have an impact on computer security though Apple never had that in mind. Controlling the access to iPod data and resources is thus essential. I had seen the adverts on TV on how small the nano was but it wasn't until I held one in my hands that I fully understood how small and how impressive these MP3 players are. Weighing only 42grams and a mere 90m by 40m and only 6.9m thick (or thin) these little units are not going to fill your suitcase when you go on holiday. Ideal for putting in your pocket, wallet or purse you can take them anywhere, except the pool of course as they are not waterproofs. The small size does create concerns for me with my children though. They can easily get lost if not looked after and outside of the home could be easy prey to pickpockets or thieves so beware.

They come in two colours white and black and two memory sizes 2gb and 4gb, theses can hold 500 and 1000 songs respectively. For me this is more than enough songs but for those of you with large CD collections, who want to put their whole collection in one place, you may want to go for one the larger iPods. The colour screen looks excellent and shows easy navigation throughout, you can download your tunes into files, albums, types of music etc. My only concern with the screen was, I felt it may scratch easily and some of the cases that you can buy for the nano still leave the screen exposed. My concern is when you put your nano into your pocket or bag and catches something metal. I had heard on the news there had been issues with the early nanos, I still feel this could be an issue. The main control in the centre of the unit was more touch sensitive than I expected, I use my thumb to scroll the menu, but it wasn't long before it was easy as pie, if fact working really well with the gel case I had bought to protect it.

The sound is excellent, I can't tell the difference between CDs and MP3s and I often think those who say they can, can't either. You can download your music from iTunes, a legal way of owning music. They are impressively boxed also, where you open the box like a book and see your nano inside. However you do not get any form of charging your nano except for the computer leads that come with it. This means if you wish to take your nano away from your computer for a period of time you will need to buy a separate mains charger. Which of course is larger than the unit itself? My final conclusion is that this little unit is a fantastic move forward in the music player industry. I was impressed by the larger iPods that my friends had, but it wasn't until the appearance of the nano that I was suitably impressed to put my hand in pocket to make a purchase. And I haven't been let down.

There are methods and mechanisms can be used to accomplish this type of access control, but historically they're generally software-only solutions. But most of these are trapped in evolving phases which makes it difficult to attempt iPod data recovery without the help of professionals. Further, most access control mechanisms relating to iPod data recovery seems vulnerable to software bugs and implementation errors. As this may result in data compromise, it is not worth pursuing. In 1971, a paper titled 'Protection' was presented by Butler Lampson where he explained the concept of data protection through the concept of multiple domains of information running on a single host. This idea is mainly that each domain would execute independently and with differing rights that exist for the programs in each of the domains. This great theory was a huge and tremendous inspiration for countless computer scientists who were researching on the subject.