# Smart card application protocol data unit

> communication unit between a smart card reader and a smart card

**Wikidata**: [Q602456](https://www.wikidata.org/wiki/Q602456)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Smart_card_application_protocol_data_unit)  
**Source**: https://4ort.xyz/entity/smart-card-application-protocol-data-unit


## References

1. Freebase Data Dumps. 2013
2. [Tarjeta SIM como Módulo de Seguridad (HSM). 2021](https://www.celersms.com/android-SIM-HSM-es.htm)
3. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)