In The Unicode Standard, Carian script implementation is discussed in  Chapter 8 Europe-II: Ancient and Other Scripts (under Anatolian Alphabets).

The Carian script was encoded in The Unicode Standard version 5.1. The script is encoded in the following block:

Blocks Character Range Added in Unicode Version Unicode Chart
Carian 102A0..102DF 5.1  U102A0.pdf

A number of proposals for its inclusion were submitted to the Unicode Technical Committee and WG2:

2000-02-15 Scripts from the Past in Future Versions of Unicode — Carl-Martin Bunz ( L2/00-128)

2000-04-26 Further comments on historic scripts — Carl-Martin Bunz ( L2/00-153)

2005-04-27 Proposal for encoding the Carian script in the UCS — Michael Everson ( WG2 N2938,  L2/05-100)

2005-08-31 Old Anatolian scripts — Michael Everson ( L2/05-241)

2006-01-12 Proposal to encode the Carian script in the SMP of the UCS — Michael Everson ( WG2 N3020,  L2/05-386)