Signing in on different PS3 while earning trophies?

Mhm, so this question probably has been thrown around the PS3 forums, but I couldn't find one with the exact answer. For a game night, my friends and I are going to rent Heavy Rain and take turns controlling each of the four characters. However, we're going to play the game on my friend's PS3 - now, for whatever reason my friend dislikes trophies and I wouldn't mind snagging a few during our game night. With that being said, is it possible to sign in with MY account on HIS PS3 to get the trophies? How would I be able to do this?

Possibly. I mean, your trophies are permanently recorded on you PSN account, so I suggest making sure it's connected to the internet. But there's only one way to find out for sure.

to earn trophies on another PS3, you have to first sync up all of your trophies on that PS3. Once you have done that, you can start earning them. After you earn some trophies, you then have to re-sync the ones that you earned.

The most important thing though is too sync them up before you play the game, and once your done earning the new ones re sync them.

BTW you have too sign in and be online, obviously.