1690
The filter value is additional control information that may be included in the EPC 1691
memory bank of a Gen 2 tag. The intended use of the filter value is to allow an RFID 1692
reader to select or deselect the tags corresponding to certain physical objects, to make it 1693
easier to read the desired tags in an environment where there may be other tags present in 1694
the environment. For example, if the goal is to read the single tag on a pallet, and it is 1695
expected that there may be hundreds or thousands of item-level tags present, the 1696
performance of the capturing application may be improved by using the Gen 2 air 1697
interface to select the pallet tag and deselect the item-level tags. 1698
Filter values are available for all EPC types except for the General Identifier (GID). 1699
There is a different set of standardized filter value values associated with each type of 1700
EPC, as specified below. 1701
It is essential to understand that the filter value is additional “control information” that is 1702
not part of the Electronic Product Code. The filter value does not contribute to the 1703
unique identity of the EPC. For example, it is not permissible to attach two RFID tags to 1704
to different physical objects where both tags contain the same EPC, even if the filter 1705
values are different on the two tags. 1706
Because the filter value is not part of the EPC, the filter value is not included when the 1707
EPC is represented as a pure identity URI, nor should the filter value be considered as 1708
part of the EPC by business applications. Capturing applications may, however, read the 1709
filter value and pass it upwards to business applications in some data field other than the 1710
EPC. It should be recognized, however, that the purpose of the filter values is to assist in 1711
the data capture process, and in most cases the filter value will be of limited or no value 1712
to business applications. The filter value is not intended to provide a reliable packaging- 1713
level indicator for business applications to use. 1714
Tables of filter values for all EPC schemes are available for download at 1715
http://www.gs1.org/gsmp/kc/epcglobal/tds. 1716
10.1 Use of “Reserved” and “All Others” Filter Values
1717
In the following sections, filter values marked as “reserved” are reserved for assignment 1718
by EPCglobal in future versions of this specification. Implementations of the encoding 1719
and decoding rules specified herein SHALL accept any value of the filter values, whether 1720
reserved or not. Applications, however, SHOULD NOT direct an encoder to write a 1721
reserved value to a tag, nor rely upon a reserved value decoded from a tag, as doing so 1722
may cause interoperability problems if a reserved value is assigned in a future revision to 1723
this specification. 1724
Each EPC scheme includes a filter value identified as “All Others.” This filter value 1725
means that the object to which the tag is affixed does not match the description of any of 1726
the other filter values defined for that EPC scheme. In some cases, the “All Others” filter 1727
value may appear on a tag that was encoded to conform to an earlier version of this 1728
specification, at which time no other suitable filter value was available. When encoding a 1729
new tag, the filter value should be set to match the description of the object to which the 1730
tag is affixed, with “All Others” being used only if a suitable filter value for the object is 1731
not defined in this specification. 1732
10.2 Filter Values for SGTIN EPC Tags
1733
The normative specifications for Filter Values for SGTIN EPC Tags are specified below. 1734
Type Filter Value Binary Value
All Others (see Section 10.1) 0 000
Point of Sale (POS) Trade Item 1 001
Full Case for Transport 2 010
Reserved (see Section 10.1) 3 011
Inner Pack Trade Item Grouping for Handling 4 100
Reserved (see Section 10.1) 5 101
Unit Load 6 110
Unit inside Trade Item or component inside a product not intended for individual sale
7 111
Table 6. SGTIN Filter Values 1735
10.3 Filter Values for SSCC EPC Tags
1736
The normative specifications for Filter Values for SSCC EPC Tags are specified below. 1737
Type Filter Value Binary Value
All Others (see Section 10.1) 0 000
Reserved (see Section 10.1) 1 001
Full Case for Transport 2 010
Type Filter Value Binary Value
Reserved (see Section 10.1) 4 100
Reserved (see Section 10.1) 5 101
Unit Load 6 110
Reserved (see Section 10.1) 7 111
Table 7. SSCC Filter Values 1738
10.4 Filter Values for SGLN EPC Tags
1739
Type Filter Value Binary Value
All Others (see Section 10.1) 0 000
Reserved (see Section 10.1) 1 001
Reserved (see Section 10.1) 2 010
Reserved (see Section 10.1) 3 011
Reserved (see Section 10.1) 4 100
Reserved (see Section 10.1) 5 101
Reserved (see Section 10.1) 6 110
Reserved (see Section 10.1) 7 111
Table 8. SGLN Filter Values 1740
10.5 Filter Values for GRAI EPC Tags
1741
Type Filter Value Binary Value
All Others (see Section 10.1) 0 000
Reserved (see Section 10.1) 1 001
Reserved (see Section 10.1) 2 010
Reserved (see Section 10.1) 3 011
Reserved (see Section 10.1) 4 100
Reserved (see Section 10.1) 5 101
Reserved (see Section 10.1) 6 110
Reserved (see Section 10.1) 7 111
Table 9. GRAI Filter Values 1742
10.6 Filter Values for GIAI EPC Tags
1743
Type Filter Value Binary Value
Type Filter Value Binary Value
Reserved (see Section 10.1) 1 001
Reserved (see Section 10.1) 2 010
Reserved (see Section 10.1) 3 011
Reserved (see Section 10.1) 4 100
Reserved (see Section 10.1) 5 101
Reserved (see Section 10.1) 6 110
Reserved (see Section 10.1) 7 111
Table 10. GIAI Filter Values 1744
10.7 Filter Values for GSRN EPC Tags
1745
Type Filter Value Binary Value
All Others (see Section 10.1) 0 000
Reserved (see Section 10.1) 1 001
Reserved (see Section 10.1) 2 010
Reserved (see Section 10.1) 3 011
Reserved (see Section 10.1) 4 100
Reserved (see Section 10.1) 5 101
Reserved (see Section 10.1) 6 110
Reserved (see Section 10.1) 7 111
Table 11. GSRN Filter Values 1746
10.8 Filter Values for GDTI EPC Tags
1747
Type Filter Value Binary Value
All Others (see Section 10.1) 0 000
Reserved (see Section 10.1) 1 001
Reserved (see Section 10.1) 2 010
Reserved (see Section 10.1) 3 011
Reserved (see Section 10.1) 4 100
Reserved (see Section 10.1) 5 101
Reserved (see Section 10.1) 6 110
Reserved (see Section 10.1) 7 111
Table 12. GDTI Filter Values 1748
10.9 Filter Values for GID EPC Tags
1749
The GID EPC scheme does not provide for the use of filter values. 1750
10.10 Filter Values for DOD EPC Tags
1751
Filter values for US DoD EPC Tags are as specified in [USDOD]. 1752
10.11 Filter Values for ADI EPC Tags
1753
Type Filter Value Binary Value
All Others (see Section 10.1) 0 000000
Item, other than an item to which filter values 8 through 63 apply
1 000001
Carton 2 000010
Reserved (see Section 10.1) 3 thru 5 000011 thru
000101
Pallet 6 000110
Reserved (see Section 10.1) 7 000111
Seat cushions 8 001000
Seat covers 9 001001
Seat belts 10 001010
Galley cars 11 001011
Unit Load Devices, cargo containers 12 001100
Security items (life vest boxes, rear lav walls, lav ceiling access hatches)
13 001101
Life vests 14 001110
Oxygen generators 15 001111
Engine components 16 010000
Avionics 17 010001
Experimental (“flight test”) equipment 18 010010 Other emergency equipment (smoke masks, PBE,
crash axes, medical kits, smoke detectors, flashlights, etc.)
19 010011
Other rotables; e.g., line or base replaceable 20 010100
Other repariable 21 010101
Other cabin interior 22 010110
Other repair (exclude component); e.g., structure item repair
Reserved (see Section 10.1) 24 thru 63 011000 thru 111111 1754