Can an Android NFC phone act as an NFC tag?

Question

From what I have understood so far, an NFC phone will act as an NFC reader which will read data from an NFC tag. Now my question is, can we switch this around? Can we make a

Answer 1

In the google io session about NFC, qa section. There was such a question:

card emulation? No API support for card emulation No consistent user experience when doing card emulation and no compelling story