Detecting whether two objects are still touching?

I'm using physics. I can easily detect when two objects initially collide but I want to check at a later time to confirm that they are still touching. Is there an easy way to check this (post-collision) "touching" status?

Thanks!

On the collision you could do something like

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if event.phase == "began" then
isTouching = true
elseif event.phase == "ended" then
isTouching = false
views:1706 update:2011/10/4 8:06:35
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