Add friend Android app which is available in the Market does exactly that, now you do not have to go about the traditional way of search a friend on Facebook and adding them. All you have to do is, touch two phones back-to-back (which have NFC) and become friends instantly, even Offline!

Leave the awkwardness of searching for the other person on Facebook, we know it happens many a times when you meet someone at a conference, a dinner, bar or some party, if there are no mutual friends it becomes kind of tough to find the other person, not any more!
Connected with a new friend instantly in the physical world, no do the same in the Virtual world
Just install the Add friend App
1. Open ADD FRIEND

2. Touch the 2 mobiles back-to-back, You directly arrive on his/her Facebook profile
3. Tap “Add”
If you are offline

When you get a signal, tap “History”, No setup, you just need to have the Facebook App installed.