Exhibit 21.1

List of Subsidiaries

     The following companies are subsidiaries of the Company and are included in the consolidated financial statements of the Company:

		Percentage of Voting
NAME	Jurisdiction of Organization	Securities Owned
American Locker Security Systems, Inc.	Delaware	100%
Canadian Locker Company, Ltd.	Dominion of Canada	100%(1)
Security Manufacturing Corporation	Delaware	100%
ALTRECO, Incorporated	Delaware	100%
Prosper Ally Limited	Hong Kong Special Administrative Region of the People’s Republic of China	100%

(1) Owned by American Locker Security Systems, Inc.