Pressure is needed to make the contact within the screen's layers, can be affected with fingers (even with gloves on), fingernails, stylus, etc.

需用压力使屏幕各层发生接触，可以使用手指(哪怕带上手套)，指甲，触笔等进行操作。

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The screens incorporate capacitance-touch technology, which means that they respond to a human fingertip but not to a stylus or other forms of pressure.

屏幕包含电容触摸技术，这意味着屏幕对人的手指有反应，但是对笔尖或者其他的压力不起反应。

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The Android-based device features a 5.3-inch HD Super AMOLED screen, as well as the S Pen, a new generation stylus which they contends sets new standards for pressure sensitivity, precision and any other characteristic you can imagine for tablet stylus.

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Just in time to celebrate the company's five year anniversary, this world's first pressure-sensitive Bluetooth 4.0 stylus for new iPad showcases just what Ten One Design is all about: innovation, design and passion for cutting-edge technology.

ENGADGET: Ten One ships $80 Pogo Connect, a pressure-sensitive Bluetooth 4.0 stylus for iPad

Thankfully, Microsoft saw fit to fix that particular issue with the inclusion of a stylus, which uses Wacom tech and offers 1, 024 degrees of pressure-sensitivity -- just like the Samsung Galaxy Note II.

ENGADGET: Microsoft Surface Pro review