Properties specific to the description of nfcTag variables

Property name	Type used	Effect
Data	Array of nfcData	Array containing: the data read in an NFC tag (after a call to NFCReadTag). the data to write into an NFC tag (after a call to NFCWriteTag).
Identifier	Binary buffer	Identifier of the NFC tag (corresponds to "hardware identifier" of a badged tag). This identifier is automatically filled after a read operation. This property is available in read-only.
ReadOnly	Boolean	True if the tag is read-only, False if it is not protected in write mode. During a read operation, this property is automatically filled. During a write operation, if ..DisplayOnly is set to True, the tag will be automatically protected in write mode: its data can no longer be modified. This operation is irreversible. Some NFC tags do not support this mode. See the help about NFCWriteTag for more details. Versions 24 and later This property always corresponds to True. Indeed, only the read operation is managed. New in version 24 This property always corresponds to True. Indeed, only the read operation is managed. This property always corresponds to True. Indeed, only the read operation is managed.
MaxSize	Integer	Maximum size (in bytes) of the data that can be stored in the NFC tag. This property is automatically filled after a read operation. This property is available in read-only. Versions 24 and later This property is not available. New in version 24 This property is not available. This property is not available.
Type	Integer constant	Type of tag corresponding to one of the following values: nfcUnknown: unknown type. Default value if no read operation was performed with the tag. nfcMifareClassic: NFC Mifare Classic nfcType1: NFC Forum Type 1 nfcType2: NFC Forum Type 2 nfcType3: NFC Forum Type 3 nfcType4: NFC Forum Type 4 The type of tag is automatically filled after a read operation. This property is available in read-only. Versions 24 and later This property is not available. New in version 24 This property is not available. This property is not available.

• <Variable name>..<Property name>
• <Variable name>.<Property name>

Main remarks

• The NFC functions support the tags corresponding to the standardized types 1 to 4 defined by the NFC Forum (http://www.nfc-forum.org/specs/spec_list/) and they can only read and write data encoded to the NDEF format (NFC Data Exchange Service).
• The NFC functions cannot be used in the simulator or in the emulator.
• The NFC functions are available for the devices running Android version 2.3.3 or later (api level 10).
  A fatal error occurs if the function is used with an earlier system version.
  Reminder: To find out the version of Android system on which the application is run, use SysAndroidVersion.
• Versions 24 and later
  The NFC functions are only available on iPhones from iPhone 8 onwards. Only the read operation is managed.
  New in version 24
  The NFC functions are only available on iPhones from iPhone 8 onwards. Only the read operation is managed.
  The NFC functions are only available on iPhones from iPhone 8 onwards. Only the read operation is managed.

Reinitializing the variable

List of functions that use the nfcTag variables

Versions 18 and later NFCReadTag New in version 18 NFCReadTag NFCReadTag	Starts reading a NFC tag or enables the detection of NFC tags for the current window.
Versions 18 and later NFCSendTag New in version 18 NFCSendTag NFCSendTag	Sends a NFC tag to another device.
Versions 18 and later NFCWriteTag New in version 18 NFCWriteTag NFCWriteTag	Starts writing data onto a NFC tag.