Seems like using NFC from and Android or Nokia phone isn’t a good idea for now. Why, the phones can be hacked with specific devices. This is according to a research consultant who experimented on the matter.
A malicious website can be sent to a victim to hack data. Specifically, NFC phones powered by Jelly Bean and Ice Cream Sandwich can be affected. Meanwhile, a Google Nexus S running Gingerbread can be hacked by allowing a tag that gives NCF access.
On a Nokia N9 running Meego, it’s the same thing, overriding defaults, enabling function, these when only controlled via Bluetooth. This means the hacker can send messages, upload or download files, and dial from the other phone.
(Un)Fortunately, these hacks can only be done between two phones that are only one or two inches apart.