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  2. ISO 6346 - Wikipedia

    en.wikipedia.org/wiki/ISO_6346

    The standard establishes a visual identification system for every container that includes a unique serial number (with check digit), the owner, a country code, a size, type and equipment category as well as any operational marks. The register of container owners is managed by the International Container Bureau (BIC).

  3. Check digit - Wikipedia

    en.wikipedia.org/wiki/Check_digit

    To calculate the check digit, take the remainder of (53 / 10), which is also known as (53 modulo 10), and if not 0, subtract from 10. Therefore, the check digit value is 7. i.e. (53 / 10) = 5 remainder 3; 10 - 3 = 7. Another example: to calculate the check digit for the following food item "01010101010x". Add the odd number digits: 0+0+0+0+0+0 = 0.

  4. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    The check digit is most often the last digit. With the payload, start from the rightmost digit. Moving left, double the value of every second digit (including the rightmost digit). Sum the values of the resulting digits. The check digit is calculated by (()), where s is the sum from step 3. This is the smallest number (possibly zero) that must ...

  5. Serial shipping container code - Wikipedia

    en.wikipedia.org/wiki/Serial_Shipping_Container_Code

    The Serial Shipping Container Code (SSCC) is an 18-digit number used to identify logistics units. In order to automate the reading process, the SSCC is often encoded in a barcode, generally GS1-128, and can also be encoded in an RFID tag. It is used in electronic commerce transactions. The SSCC comprises an extension digit, a GS1 company prefix ...

  6. Code 128 - Wikipedia

    en.wikipedia.org/wiki/Code_128

    A Swiss postal barcode encoding "RI 476 394 652 CH" in Code 128 (B & C) Code 128 is a high-density linear barcode symbology defined in ISO/IEC 15417:2007. [1] It is used for alphanumeric or numeric-only barcodes. It can encode all 128 characters of ASCII and, by use of an extension symbol (FNC4), the Latin-1 characters defined in ISO/IEC 8859-1 ...

  7. IMO number - Wikipedia

    en.wikipedia.org/wiki/IMO_number

    This consists of a six-digit sequential unique number followed by a check digit. The integrity of an IMO number can be verified using its check digit. The checksum of an IMO ship identification number is calculated by multiplying each of the first six digits by a factor of 7 to 2 corresponding to their position from right to left. The rightmost ...

  8. UIC wagon numbers - Wikipedia

    en.wikipedia.org/wiki/UIC_wagon_numbers

    As shown on the photographs at right, the code may be arranged either vertically (e.g. on closed wagons) on three or more lines at man's height with the letter codes next to the corresponding part of the digit code, or horizontally (e.g. on flat wagons) at the bottom of the chassis side with all digits together (with groups separated by spaces and the check digit by a dash) and all letters ...

  9. Verhoeff algorithm - Wikipedia

    en.wikipedia.org/wiki/Verhoeff_algorithm

    Verhoeff had the goal of finding a decimal code—one where the check digit is a single decimal digit—which detected all single-digit errors and all transpositions of adjacent digits. At the time, supposed proofs of the nonexistence [6] of these codes made base-11 codes popular, for example in the ISBN check digit.