@deivdev/mrz
v1.0.0
Published
Parse MRZ (Machine Readable Zone) from identity documents
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mrz
Parse MRZ (Machine Readable Zone) from identity documents.
Installation
$ npm install --save mrz
Example
const parse = require('mrz').parse;
let mrz = [
'I<UTOD23145890<1233<<<<<<<<<<<',
'7408122F1204159UTO<<<<<<<<<<<6',
'ERIKSSON<<ANNA<MARIA<<<<<<<<<<'
];
var result = parse(mrz);
console.log(result);
API
parse(mrz)
Parses the provided MRZ. The argument can be an array of lines or a single string
including line breaks. This function throws an error if the input is in an
unsupported format. It will never throw an error when there are invalid fields
in the MRZ. Instead, the result.valid
value will be false
and
details about the invalid fields can be found in result.details
.
result.format
String identifying the format of the parsed MRZ. Supported formats are:
- TD1 (identity card with three MRZ lines)
- TD2 (identity card with two MRZ lines)
- TD3 (passport)
- SWISS_DRIVING_LICENSE
- FRENCH_NATIONAL_ID
result.valid
true
if all fields are valid. false
otherwise.
result.fields
Object mapping field names to their respective value. The value is set to null
if it is invalid. The value may be different than the raw value. For example
result.fields.sex
will be "male" when the raw value was "M".
result.details
Array of objects describing all parsed fields. Its structure is:
- label {string} - Full english term for the field.
- field {string} - Name of the field in
result.fields
. - value {string} - Value of the field or
null
. - valid {boolean}
- ranges {Array} - Array of ranges that are necessary to compute this field.
Ranges are objects with
line
,start
,end
andraw
. - line {number} - Index of the line where the field is located.
- start {number} - Index of the start of the field in
line
. - end {number} - Index of the end of the field in
line
.
formats
Static mapping of supported formats.
states
Static mapping of state code to state name.
Specifications
TD1, TD2 and TD3
https://www.icao.int/publications/pages/publication.aspx?docnum=9303
Swiss driving license
http://www.astra2.admin.ch/media/pdfpub/2003-10-15_2262_f.pdf
French national id
https://fr.wikipedia.org/wiki/Carte_nationale_d%27identit%C3%A9_en_France#Codage_Bande_MRZ_(lecture_optique)