Online Behavioural Tracking

You know who is watching you when you're online? No, it isn't something which you would realize or see . like anything which  has mass and is moving watching each and everything you do while you are on the internet. Its not a person or an animal. Rather it is not “it” its “they”. Yes they are organisations which track your every activity on the internet while you're surfing,searching anything or whatever you do while you are connected.
Most of these organisations track you or to be more specific “spy on you” and name it as behavioral tracking.

 These org. are mainly marketing firms who use that data to sell information to the companies based on there targeted customers. Don’t worry they don’t deal with personnel information of any person but to be honest if they want they surely can.

This organisation track the data of people based on various search patterns social, religious, entertainment, matrimonial etc and then they formulate certain activity graphs which they use to sell to the companies.Right now no one exactly can tell what is exactly going on with your personnel data these with companies but certain browser’s have offered  “Do not Track” option they privacy option which lets the companies know that you do not want to share any information with them. But the question is does it really works?? Right now all I can say is lets hope…!

But there are browser plugins which let you know about who is tracking your browsing information .”Collusion” is one of them. It lets you see the animated graph of  the sites to which your computer connects while visiting the particular web site and also it provides optional setting ti block certain tracking sites .you can download collusion for chrome  from chrome store.    

                                 

Universal Serial Bus (USB) 3.0

USB 3.0 is the next version of the USB 2.0, the main feature of this version is speed. It is faster than its predecessor by 10x. Also it provides full duplex transmission mode. And it is greener in terms of power usage.

Difference between USB 2.0 and USB 3.0 :-

      Physical Difference:

USB 3.0 port also has “SS” mentioned on it, it is of blue color. Also the wires are bit thicker. The regular 2.0 connectors are usually grey in color.

      Wires:

USB 2.0                                                      USB 3.0

4 Pins within the wire.

9 pins within the wire.

  Transmission speed:

USB 2.0 has data transfer rate upto 480 Mbps. Whereas the USB 3.0 has 4.8 Gbps of transfer rate. This is almost 10 times faster than the 2.0.

       Transmission mode:

USB 2.0 can either send or receive the data (Half duplex).

USB 3.0 can perform both sending and receiving data simultaneously (Full duplex).

       Backward compatibility:

USB 3.0 devices are backward compatible, means they can be used with the standard USB 2.0 product, but the benefit of speed, bandwidth will not be up to the mark as expected from the standard USB 3.0 port.

        Power:

USB 2.0 uses upto 500 mA power.

USB 3.0 uses upto 900 mA powers. But is more efficient.

USB 3.0 is much more power “aware”, as it controls the power of the devices, like when the device needs maximum throughput it will provide full power, but it will use less power when the device is only connected i.e. is in idle state. Also it can power more devices from the single hub.