July 12, 2016
U.S. Securities and Exchange Commission Office of the Chief Accountant
100 F Street, NE Washington, DC 20549
Grant Thornton LLP
200 South Sixth Street, Suite 1400
Minneapolis, MN 55402-1434
T 612.332.0001
F 612.332.8361
www.GrantThornton.com
Re: Image Sensing Systems, Inc. File No. 0-26056
Dear Sir or Madam:
We have read Item 4.01 of Form 8-K of Image Sensing Systems, Inc. dated July 10, 2016, and agree with the statements concerning our Firm contained therein.
Very truly yours,
Grant Thornton LLP
U.S. member firm of Grant Thornton International Ltd