TechBits: tech news (03.13.13)

The Tech Guy has a look at some of this week's tech headlines:

Samsung is set to release the Galaxy S4. {}It replaces the S3, which is less than one year old. {}The new phone may have an 8-core processor, and an eye detection system that can sense when you;ve reached the bottom of a page, and automatically scroll up.

Photos of iPhone prototypes have been leaked out- they show a device more the size of a tablet. {}It has hard-wired ports for use in testing.

A Japanese researcher has figured out you can burn calories- though not many- by clicking your mouse. {}Contracting your index finger uses about 1.4 calories. {}However, that's for a full contraction. {}Most people barely contract their fingers in a mouse click, so they would need to do lots of clicking to see any benefit.