EX-21.1 6 a2052910zex-21_1.htm EX 21.1 Prepared by MERRILL CORPORATION
QuickLinks -- Click here to rapidly navigate through this document


Exhibit 21.1

List of Subsidiaries

Demeter Technologies, Inc., a Delaware corporation
d/b/a Demeter Technologies Inc.

Sensors Unlimited, Inc., a New Jersey corporation
d/b/a Sensors Unlimited, Inc.

Shomiti Systems, Inc., a California corporation
d/b/a Shomiti Systems, Inc.




QuickLinks