# check digit

> error detection for identification numbers

**Wikidata**: [Q1337960](https://www.wikidata.org/wiki/Q1337960)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Check_digit)  
**Source**: https://4ort.xyz/entity/check-digit


## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. Freebase Data Dumps. 2013
3. National Library of Israel
4. Wikibase TDKIV