Calculate Swipe Speed for different screen resolutions (iPhone)

Questions & Answers
1

I would like to calculate swipe speed for different screen resolution.
For example: Calculating swipe speed for iPhone5s is different to iPad2Gen. Please help.

2

You are going to have to use some factor when calculating the distance traveled. What factor will depending on the nature of your game. You can use Screen.dpi, the diagonal of the screen resolution, viewport coordinates (Camera.ScreenToViewportPoint()), or you can use world coordinates at some fixed, non-zero distance from the screen (Camera.ScreenToWorldPoint()).