Components of intelligent mail barcode

The Intelligent Mail Barcode (IMb) is a unique barcode used by the United States Postal Service (USPS) to track and manage mail and packages. The IMb is composed of several components, which are used to identify the mailpiece and its contents. The components of an IMb are:

  1. Service Type Indicator (STI): This is a one-digit code that indicates the type of service used to mail the piece, such as First-Class Mail, Priority Mail, or Parcel Post.
  2. Mailpiece Identifier (MID): This is a unique 18-digit code assigned to each mailpiece by the USPS. The MID is used to track the mailpiece throughout its journey.
  3. Delivery Point Sequence (DPS): This is a unique 18-digit code that identifies the sequence in which the mailpiece was delivered to the delivery point.
  4. Barcode Sequence Code (BSC): This is a two-digit code that indicates the sequence in which the mailpiece was scanned at a USPS facility.
  5. Mail Service Type (MST): This is a one-digit code that indicates the type of mail service used to mail the piece, such as First-Class Mail or Priority Mail.
  6. Facility Sortation Sequence (FSS): This is a unique 18-digit code that identifies the sequence in which the mailpiece was sorted at a USPS facility.
  7. Barcode Check Digit (BCD): This is a single-digit code that is used to verify the accuracy of the IMb.
  8. Mailpiece Orientation (MO): This is a one-digit code that indicates the orientation of the mailpiece, such as whether it is upright or sideways.
  9. Mailpiece Size (MS): This is a one-digit code that indicates the size of the mailpiece, such as letter, flat, or parcel.
  10. Barcode Format Indicator (BFI): This is a one-digit code that indicates the format of the IMb, such as whether it is a 2D barcode or a 1D barcode.

The IMb is used to track mailpieces throughout the USPS network, and it provides a range of benefits, including:

The IMb is used for a variety of mail classes, including First-Class Mail, Priority Mail, Priority Mail Express, and Parcel Post. It is also used for packages and mailpieces that are sent to the USPS using a variety of services, including Click-N-Ship and USPS Online.