In The Unicode Standard, Khojki script implementation is discussed in  Chapter 15 South and Central Asia-IV: Other Historic Scripts.

The Khojki script was encoded in The Unicode Standard version 7.0. The script is now encoded in the following block:

BlocksCharacter RangeAdded in Unicode VersionUnicode chart
Khojki 11200..1124F 7.0  U11200.pdf

Subsequent to version 7.0, the following characters have been added to the script:

CharactersUnicode VersionDocumentation
1123E 9.0  WG2 N4575,  L2/14-133

Documentation refers to  ISO Working Group and Unicode proposals

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

2008-05-05 Towards an Encoding for the Khojki Script in ISO/IEC 10646 — Anshuman Pandey ( L2/08-201)

2009-03-25 Proposal to Encode the Khojki Script in ISO/IEC 10646 — Anshuman Pandey ( WG2 N3596,  L2/09-101)

2010-09-12 Revised Proposal to Encode the Khojki Script in ISO/IEC 10646 — Anshuman Pandey ( WG2 N3883,  L2/10-326)

2011-01-28 Final Proposal to Encode the Khojki Script in ISO/IEC 10646 — Anshuman Pandey ( WG2 N3978,  L2/11-021)

2014-05-05 Proposal to Encode the Khojki Sign SUKUN in ISO/IEC 10646 — Anshuman Pandey ( WG2 N4575,  L2/14-133)