Updates in June 2017: For more details on updates to EMVLab, including HTTPS and better handling of 3-byte and unknown tags see my blog post.
Name Description Source Format Template Tag Length P/C
Language Preference 1–4 languages stored in order of preference, each represented by 2 alphabetical characters according to ISO 639 Note: EMVCo strongly recommends that cards be personalised with data element '5F2D' coded in lowercase, but that terminals accept the data element whether it is coded in upper or lower case. ICC an 2 A5 5F2D 2–8 primitive

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