Id Systems (IDSY) 10-K 2008 FY Annual report

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements of I.D. Systems, Inc. on Form S-8 (Nos. 333-87973, 333-134142, 333-134138 and 333-144709) and on Form S-3 (No. 333-116144) of our reports dated March 12, 2009 with respect to our audits of the balance sheets of I.D. Systems, Inc. as of December 31, 2007 and 2008, and the related statements of operations, changes in stockholders’ equity and cash flows for each of the years in the three-year period ended December 31, 2008, and our audit of the internal control over financial reporting as of December 31, 2008, which reports appear in the December 31, 2008 annual report on Form 10-K of I.D. Systems, Inc.

We also consent to the reference to our firm under the heading “Experts” in the Registration Statement on Form S-3 (Registration No. 333-116144).

/s/ Eisner LLP

New York, New York

March 12, 2009