NFC Shield

few doubts ..
Question 1 : can i use pn532 shield as a target and phone can write some data in it and then transfer it to arduino..can i do this via spi or uart??
Question 2 : i want some data from phone to PN532..just a 6-10 digit no ..!! i don't want to transfer more data! can i do it without libnfc?? or if i can transfer it via p2p mode!! ??
is their anyone who has done p2p mode on nfc reader and phone, so i can get some idea about p2p implementation between phone and nfc reader.... or if someone can give me some starting point for p2p communication between android and reader.,.??
btw i am using Arduino UNO

no reply.. anyone who can help?? much appreciated!