Legacy Documentation: Version 2017.2 (Go to current version)
LanguageEnglish
  • C#
  • JS

Script language

Select your preferred scripting language. All code snippets will be displayed in this language.

Touch.fingerId

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

public var fingerId: int;
public int fingerId;

Description

The unique index for the touch.

All current touches are reported in the Input.touches array or by using the Input.GetTouch function with the equivalent array index. However, the array index is not guaranteed to be the same from one frame to the next. The fingerId value, however, consistently refers to the same touch across frames. This ID value is very useful when analysing gestures and is more reliable than identifying fingers by their proximity to previous position, etc.

Touch.fingerId is not the same as "first" touch, "second" touch and so on. It is merely a unique id per gesture. You cannot make any assumptions about fingerId and the number of fingers actually on screen, since virtual touches will be introduced to handle the fact that the touch structure is constant for an entire frame (while in reality the number of touches obviously might not be true, e.g. if multiple tappings occur within a single frame).

Did you find this page useful? Please give it a rating: