Chapter 6 – Working with Sections
Like POSTNET Codes, PLANET Codes have 14 digits and consist of tall and
short bars. PLANET symbology is the inverse of POSTNET because each
POSTNET digit has a combination of two tall and three short bars and each
PLANET digit had three tall and two short bars.
All PLANET bar codes include a five-bar checksum digit or correction
character. This digit is always the number which, when added to the sum of the
other digits in the bar code, results in a total that is a multiple of 10.
Here is an example of the PLANET Code bar code:
You can download a True Type font from the USPS at:
• The first two digits comprise an ID Confirm Service number, such as 4 which
indicates First-Class Mail Letters.
• The next five digits comprise a Subscriber ID assigned by a post office.
• The next six digits comprise the Mailing ID which is assigned by the system and
identifies each mail piece in a batch cycle.
• The last digit is a Check Digit which is calculated based on the sum of the
previous 13 digits. For example, if the sum of the previous 13 digits is 44, the
Check Digit would be 6 (44 + 6 = 50 which is divisible by 10).
Generating a USPS Intelligent Mail Bar Code (4-State
Customer Bar Code)
You can generate the Intelligent Mail® bar code, formerly referred to as the 4-State
Customer bar code on your forms. The Intelligent Mail® bar code is a height-
modulated bar code using four distinct vertical bar types.
It encodes a 20, 25, 29, or 31-digit string into 65 vertical bars, each representing one
of four possible states: full bar, ascender, tracker, and descender. Intelligent Mail bar
code expands the ability to track individual mail pieces and provide its customers
with greater visibility in the mail stream.
You must follow the guidelines set by US Postal Service to implement an Intelligent
Mail® bar code. You can download these guidelines from the following web site:
Since Documaker handles the encoding and printing of the bar code and does not use
the font provided by the US Postal Service, you do not have to download that font. You
do, however, need to get a Mailer ID from the US Postal Service.