http://www.3dtechtronics.com/apples-phil-schiller-says-that-screen-
guards-will-work-with-3d-touch-display/
http://goo.gl/hM11qF
縮網址
3D Techtronics寫信去問了Phil Schiller關於保護貼的問題
Phil Schiller回答任何遵循標準的保護貼都不會對3D Touch造成影響
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蘋果官方標準
https://developer.apple.com/resources/cases/
1.electrically conductive (具導電性)
2.must not exceed 0.3mm in thickness (厚度不超過0.3mm)
3.must not introduce air gaps between the touchscreen (螢幕與保護貼間無縫隙)