Exhibit 23.1


INDEPENDENT AUDITORS' CONSENT

The Board of Directors
CNS, Inc.:

We consent to incorporation by reference in the registration
statements Nos. 333-60017, 33-29454, 33- 42971 and 33-59719 on Form S-8 of CNS,
Inc. of our report dated January 18, 2001, relating to the consolidated balance
sheets of CNS, Inc. and subsidiaries as of December 31, 2000, and 1999, and the
related consolidated statements of operations, stockholders' equity and
comprehensive income (loss), and cash flows for each of the years in the
three-year period ended December 31, 2000, which report is included in the
December 31, 2000, annual report on Form 10-K of CNS, Inc.

/s/ KPMG LLP



Minneapolis, Minnesota
March 26, 2001