In The Unicode Standard, Tagbanwa script implementation is discussed in Chapter 17 Indonesia and Oceania under Philippine scripts.
The Tagbanwa script was encoded in The Unicode Standard version 3.2. The script is encoded in the following block:
|Blocks||Character Range||Added in Unicode Version||Unicode Chart|
A number of proposals for its inclusion were submitted to the Unicode Technical Committee and WG2:
1992-10-29 Tagalog and Mangyan (Buhid) — Rick McGowan ( Unicode Technical Report #3 R2)
2000-10-16 New draft for Philippine script with block introduction — Michael Everson ( L2/00-357)
2011-03-03 Indonesian and Philippine Scripts and extensions not yet encoded or proposed for encoding in Unicode — Christopher Miller ( L2/11-091)