How can I navigate *all* the screen's buttons?

Question

I can use the Tab to run over the buttons in the screen as a list.

I want to navigate the buttons in my screen as they where order as a matrix,

for example, with Tab+arrow .

Is there any way to do that?

as first step in the browser, but also over all my screen.

Im imagine of a software that scan and analyze the screen layout, and maps all the screen's button to a matrix, and then you can navigate them with Tab+arrow .

Answer 1

Consider using something like vimium (for chrome). You click a button than it highlights all of the links on the page, than you can choose a link with his hot keys.

For example, in the attached screenshot use "DD" to see photos, "SD" to see videos, etc