Apple devices iPhone 6s and iPhone 6s Plus feature a new user input they call 3D Touch. It senses how deeply the user presses the display.
This is great since they managed to use a natural human gesture in there. Playing the devil’s advocate, pressing the screen still takes some efforts when compared with something like swipe gestures. From a UX perspective, this new input has the ability to replace the double tap in a lot of games and apps.
Usability is divided into 3 categories for 3D touch:
What you can expect from the Pressure Sensitivity in iPhone 6s and iPhone 6s Plus:
Android phone manufacturers will follow this lead, unless Apple acts sour. Then you just might have to watch patent wars instead of star wars.