It will be nice if you consider gesture recognition as a feature of unituio in upcoming releases.

Carlos, sorry for the late reply (ummm.... I am writing this intro way to often the last weeks/months)... Dig around a bit in the Unity forums - there are two projects that are doing GR. Far as I remember, one of the projects is already for iPhone/iPad - so it should work with uniTUIO. If you are feeling adventurous, dig around for a cool GR library called $1 gesture recognition. It has several implementations (JS, C#, AS3 etc. Etc.) so it should be quite straight forward to implement this in your project...

Cheers,

Sandor