/usr/ is in libcacard-dev 1:2.5.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/cacard/
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libcacard.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libcacard-dev/
/usr/share/doc/libcacard-dev/copyright
/usr/include/
/usr/include/cacard/card_7816t.h
/usr/include/cacard/vcardt_internal.h
/usr/include/cacard/vscard_common.h
/usr/include/cacard/vcardt.h
/usr/include/cacard/vcard_emul_type.h
/usr/include/cacard/vevent.h
/usr/include/cacard/cac.h
/usr/include/cacard/vreader.h
/usr/include/cacard/vreadert.h
/usr/include/cacard/vcard_emul.h
/usr/include/cacard/vcard.h
/usr/include/cacard/eventt.h
/usr/include/cacard/card_7816.h
/usr/lib/x86_64-linux-gnu/libcacard.so
/usr/share/doc/libcacard-dev/changelog.Debian.gz