Barcode Scanning

The USPS Postal Numeric Encoding Technique (POSTNET) symbology was developed by the United States Postal Service (USPS) to help sort business reply and courtesy reply mail and was also used for regular bulk mailings. It was typically used in conjunction with the USPS Postal Alpha Numeric Encoding Technique (USPS PLANET) symbology.

1.
• Leading quiet zone

1.
• Start bar, also called a frame bar, which is a single tall bar

1.
• Encoded address information

1.
• Check digit

1.
• Stop bar, also called a frame bar, which is a single tall bar

1.
• Trailing quiet zone

1.
• The height of the tall bars is 0.125 inches, plus or minus 0.010 inch

1.
• The height of the short bars is 0.050 inches, plus or minus 0.010 inch

1.
• The width of the bars is between 0.015 and 0.025 inches

1.
• The width of the bar and space pairs is between 0.045 and 0.050 inches

1.
• The left edge of the barcode must be between 3.5 and 4.25 inches from the right edge of the envelope.

1.
• The bottom edge of the barcode must be 0.25 inches (plus or minus 0.125 inch) from the bottom edge of the envelope.