Pros:

• Cheap. At Kickstarters the haga offered is $ 7 investment to get this tool. However, I do not know the official price.
• Easy installation. Just paste on Trackpad, install the default program, and you are ready with this tool.
• Cool, this is a very thin film transparent.

Cons:

• Nothing. But for those who only have a small trackpad, this will not be useful.

My Personal Opinion:

• This is a "PERFECT" innovation and I just saw it now. With a thin film glass that is implemented on the trackpad and bundled with a particular application, this makes it really nice to use.
• Usually our performance will be too long if using laptop default keyboard because the rules of arrangement of numbers is at the top of the line from the left right.