EXHIBIT 23.1 CONSENT OF INDEPENDENT AUDITORS We consent to the reference to our firm under the caption "Experts" and to the use of our report dated January 13, 2000, in the Registration Statement, as amended, (Form S-1 No. 333-90873) and related Prospectus of Apropos Technology, Inc. dated January 24, 2000. /s/ Ernst & Young LLP Chicago, Illinois January 21, 2000