Lottery ticket bar code

A lottery ticket comprising:

• a substrate having a first and a second side;
• a play area a least partially covered by a first scratch-off material on one of said sides;
• a first bar code including validation data printed on said first side;
• and
• a second bar code including inventory data printed on said second side.

A lottery ticket comprising:

• a substrate having a first and a second side;
• a play area a least partially covered by a first scratch-off material on said first side;
• a first bar code including validation data printed on said first side;
• a second scratch-off material covering at least a portion of said first bar code;
• and
• a second bar code printed on said second side wherein said second bar code includes inventory data and is not covered by a scratch-off material.

A lottery ticket comprising:

• a substrate having a first and a second side;
• a play area a least partially covered by a first scratch-off material on said first side;
• a first bar code including validation data printed on said first side;
• and
• a second bar code printed on said second side wherein said second bar code includes inventory data and is not covered by a scratch-off material.

A lottery ticket comprising:

• substrate having a first and a second side;
• a play area at least partially covered by a first scratch-off material on one of said sides;
• an optically readable code including validation data, a portion of which is redundant, printed on one of said sides;
• and
• a second scratch-off material covering a portion but not all of said code and at least a sufficient portion of said redundant validation data such that said information can not be read unless at least a portion of said second scratch-off material is removed.