InstanceId for Blaze template

Do you know if there is a way to get a unique instance Id for each template in blaze ?
I need this for the DOM in case i use the template twice on the page to avoid conflicts.

Actually I do :

onCreated : this.instanceId =

helpers :

instanceId: function() {
return Template.instance().instanceId;

I was wondering if the blaze template instance would have an internal variable directly accessible (both in the html and in the js).