Subsidium is now a part of the UPSTACK family of companies.
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About AMT-USC

AMT-USC, the world leader in software security solutions, provides the leading Mass Notification security software in the world today, Total Alert. Total Alert is the fastest delivered Alerts (delivered in under a minute) unified secure communication mass alert notification software including public “Action” help stations with software, SafeKey GPS locate/help Fob’s, shooter detection systems, and GPS geofencing. Contact us below if you are interested in offering AMT-USC.