The Tani script is not yet in Unicode. The script has a tentative allocation at U+114E0..U+114FF in the  Roadmap to the SMP for the Unicode Standard.

A preliminary proposal for its inclusion has been submitted to the Unicode Technical Committee and WG2:

2010-04-17 Preliminary Proposal to Encode Tani Lipi in the UCS — Anshuman Pandey ( WG2 N3823,  L2/10-146)