Taiwan (TW)

National-ID patterns loaded when you pass countries=["TW"] (or "all"). Universal patterns always stay.

This is a detector, not a legal opinion

id-extract matches the shape of these numbers. A hit is not proof that the value was issued, is still valid, or that the cited statute applies to your document. Checksums, where present, only test the extra digit.

NATIONAL_ID_TW — National ID number (身分證字號)

A 10-character number: one letter (place of registration) plus 9 digits.

Package type	NATIONAL_ID_TW
Shape this package looks for	1 letter + 9 digits
Checksum	none in this package
Example (synthetic)	A123456789

Official sources

• Ministry of the Interior — household registration

The example values are synthetic or well-known public test numbers. Do not treat them as issued identifiers.