"hover your finger" is a correct and usable phrase in written English.
It means to hold or position your finger in a suspended or elevated position, usually above or near something. Example: "To select an option on the touchscreen, hover your finger over it until it is highlighted and then tap to confirm."
He highlights Air View and Air Gesture (the former produces a cursor or details from a calendar when you hover your finger over the screen; the latter lets you control the screen, say with swiping, without actually touching it).
In addition to normal touch gestures, iOS could detect when you hover your finger over the screen to trigger some actions.
The idea is that you hover your finger above the screen, "so it acts like a moving cursor" without ever having to actually touch the screen.
Hover your finger just over the water and wait.
For example, hovering your finger over an email shows you a longer preview without opening the message; hovering your finger over a date on the calendar shows you a quick view of what to expect on that day.
Because this type is based on electrical charges, you don't necessarily have to apply that much pressure because it picks up even the slightest change as if you were hovering or gliding your finger across the plane.
Make your finger hover 1 inch (2.5 cm) in front of your neighbors face.
If you're sittin' there in iTunes with your finger hovering over the "Update" button, anxiously awaiting word of an untethered jailbreak for the just-released iOS 4.3.3: it's go time.
Who else's follow button have you perversely found your finger hovering over, a sigh of resignation gathering in your lungs?
Air View: Like the stylus on the Galaxy Note 2, you can hover over the display with your finger to view information about certain pieces of content.
He's going to toy with him for a few weeks – hover the finger over him, watch him visibly flinch, fire the person next to him – then hand him leadership for the make-a-TV-advert task and watch him fall apart completely.
