Smart Pic overlay

[jkthomsen9]

I am a little confused on how this is going to work. I have a few questions.

1. Is this fully implemented or is this one of the items that has more to be added in latter update?

2. If the overlay is only viewable by the DM; how would this be useful for secret doors for example. It is very useful while the door is undiscovered, but useless after and you wish to reveal it.

3. I read in the release notes that the overlay was transparent, or could be. I could not find a way to do that. I only found on or off.

I am not being critical of this feature, in fact I would love for it to be expanded upon. I am curious what the delv's envisioned this feature being used for.