According to Korean media It is revealed that Samsung will add a floating preview function similar to note 2 to S4, but the new technology used does not need a touch pen, but is directly realized through fingers.
Before that, Samsung used the latest maXTcouch S technology from Atmel, which can recognize two signals: finger touch and electromagnetic induction.
Atmel touch layer technology
Prior to this, Pantech Vega LTE, another Korean mobile phone manufacturer, produced by Fantai, supported similar gesture operations, but it was realized through the front camera. Considerable power consumption. The current news points out that Samsung's solution will make the power consumption very small, which is worth looking forward to.
As for how much use benefits the hover preview can bring to users, you can refer to the Xperia sola before Sony. That is to say, some functions of the mouse are realized through hovering preview. Usually, when we browse the web page, when the mouse is placed on the link with drop-down options, the drop-down content will be automatically displayed. The hover preview can be used to achieve similar functions, and it has also been implemented on S Pen.
The following is Sony Xperia sola demo video:
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