Smart zoom in and out screen

About Smart zoom in and out screen Android App

Traditional Way
Pinch-in Pinch-out by two fingers

New Proposal
Zoom in and out only by one finger or two fingers

Advantages
Zoom In & Out by one hand
Zoom In & Out only by touch pen

When or for whom ? do you need ?
For the people who are disabled in one hand
When you use touch pen while wearing gloves
When you have to use only one hand
ex.) When you hold a baggage in one hand
When you hold a strap in a bus or metro.

Zoom in and out 1
To zoom in, drag from center to the edge
To zoom out, drag from the edge to the center

Zoom in and out 2 ( Same result by Pinch-in Pinch-out )
After first touch on specific point, then drag from the status of 2nd touch within a certain time.
To zoom in, drag the opposite direction from the 1st touch, to zoom out, drag to the same direction from the 1st touch.

Zoom in 3
After 1st touch, then touch 2 times in a row to the point diagonally, need to be expanded


YouTube Link : http://www.youtube.com/watch?v=5Zmn3l_x5N0&feature=youtu.be