Normally, this is not a problem because most NFC chips are supplied in the mobile phones of NXP, which apparently does not take it so seriously with the standard, and can read and write other chip types.
In Nexus 4 (and the Nexus 10) but puts a NFC chip from Broadcom, can read / write only what pure NFC tags.
After these tags can not be used for me as Nexus 4 users, there are only 2 stars.
Source: [...]