5.2.4.3 Capability Container
The format of the Capability Container for Type 5 tags presented below is based on the current conventions that are used in the field with existing Type 5 tags.
- Byte 0 – This value is the 'magic number' and must always be equal to 0xE1 to indicate that NDEF data is stored.
- Byte 1 – This value indicates the reader which mapping specification is being used by the tag.
- Byte 2 – This value indicates the memory size of the data sections for the Type 5 tag. Multiply this value by 8 to get the total memory size of the data section in bytes.
- Byte 3 – This value indicates the Read/Write access capabilities of the Type 5 tag. The most significant nibble is for Read access. A value of 0x0 means the tag can be read from without any security. The least significant nibble is for Write access. A value of 0x0 means the tag can be written to without any security, and a value of 0xF means that the tag is read only.