The lens reveals an enlarged depiction within its radius, not confusing the rest of the page. A simple press of Alt+Z* buttons summons a lens! Pressing any key takes it off. Ctrl+Z for MAC operators by default. No special permit is required for the extension. It works, simply. Please note that the add-on does not work in the New Tab page, Chrome setting page and Chrome Web Store consequently, but it will work on any other internet pages.