Security Where Criminals Least Expect It

Creating a safer world by protecting and recovering high-value assets and apprehending criminals with innovative solutions that leverage  the latest technologies while still meeting compliance standards.

Discover Innovation that Protects

Why have we succeeded for so long?

Because we offer innovative solutions supported by a first class service organization which pledges customer satisfaction through products that perform.

With over 45 years experience and protecting more than 250,000 locations worldwide, our innovative solutions combat crime through a variety of technologies including GPS Tracking and Dye and Ink Staining. We have served thousands of institutions and organizations in the Financial, Retail, Courier/Cash in Transit and Law Enforcement markets.

Assets Recovered


With over 45 years of experience, our satisfied customers include over 250,000  Financial Institutions, Retail Locations, ATM Owners and Deployers, and Law Enforcement Agencies worldwide.


Our innovative solutions combat crime and protect cash and other valuables using a variety of technologies including innovative GPS Tracking systems and Dye and Ink Staining components.

3SI is the world leader in asset protection systems.

Our solutions create a safer world by protecting and recovering stolen cash and high-value assets and apprehending criminals.

Criminals Apprehended

Law Enforcement Agency Partners

Trackers Deployed


January 2018: At Least 80 Criminals Caught and $864K Recovered!

$30,000 - Phone Tracker™ - West Allis, WI - Jan 31 Three suspects robbed a wireless store. Phone Tracker automatically alerted police who tracked and apprehended the suspects. All the merchandise was recovered and returned to the store. $500 - Cash Tracker™ -...

New Phone Tracker™ Package Design Released!

3SI has released a new Phone Tracker with updated package design to reflect the newest smartphone models. Phone Tracker GPS Tracking Devices help police safely track criminals, recover assets and apprehend criminals. Phone Tracker’s covert design protects valuable...


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