Covering your MacBook Pro with Invisible Shield "skin". Is it safe?

You've heard right. And they won't protect the machine against anything except fingerprints, which wipe right off anyway. That makes an "invisible shield" a real waste of money as well as a bad idea. If you need any other reasons not to buy one, consider the likelihood that if you ever want to remove it after it starts to look beat-up and dog-eared, it will be hard to get off and may leave a sticky residue all over your MBP. Still interested? Not me!

No, I'd never use one myself, and I don't know that using one would cause overheating. In fact I know it wouldn't cause overheating. Overheating is prevented by the design of the machine no matter how much insulation it's wrapped in, because it will put itself to sleep before it crosses a critical high-temperature threshold.

But common sense suggests that putting anything at all between the aluminum of the MBP's case and the ambient air will impair radiant and convective cooling in some degree. A thin layer of sticky plastic isn't likely to be a very good insulator, so an Invisible Shield would undoubtedly only raise the machine's temperature slightly, all other factors being equal. But is that something I'd be happy to cause in order to protect my MBP against fingerprints, at significant expense, and at the risk of being unable to remove it cleanly later? No thanks, but you may feel differently.

It shouldn't cause overheating unless it blocks the main vent. The main vent is the huge long opening along the back edge. The case is not a primary way to dissipate heat. People put those much thicker Speck plastic shields on their MacBooks and they're fine.

Well, the MBP may have protective mechanisms from "critical overheating", but I really wouldn't be comfortable with the idea of my MBP running "warmer" even.

Yes, that's just how I feel.

Moreover, I've used the product on my iPhone, and it doesn't leave any residue when it's removed.

I wonder how true that is when it's removed from a surface that may, in daily use, reach 120°-150°F or more even when nothing has been applied to it. Most kinds of "stickum" acquire new and undesirable properties when heated strongly. If you've ever tried to remove almost any kind of tape from a smooth surface after it's been left out in the summer sun for a few hours, you've seen this. One hopes the makers of "Invisible Shield" have used something more heat-resistant, but that's just a hope.

Plus, if you have my luck and go through 3 displays you're going to have to either take off the skin or buy a new one every time.