A new tool in the fight against nuclear terrorism

More powerful than a RIID, a pocket-sized device that can recognise isotopes and neutrons in seconds.

D3S wearable RIID

A weapon in the fight against radiological terrorist attacks

Designed to detect radiological threats like dirty bombs, radioactive contamination, smuggling of radioactive substances and radiation at the scene of an accident or terrorist attack. The D3S wearable RIID turns anyone into a radiation warning system that is hard to avoid and can go anywhere a terrorist can.

A radiological attack (for example from a dirty bomb, radioactive poisoning or other contamination) could leave thousands of dead, whole neighbourhoods uninhabitable and populations traumatised, the effects could last for many years and bring a city to its knees.

The D3S wearable RIID is your new line of defence.

Find out more about the D3S wearable RIID

Use the enquiry button below
Or call
UK, Europe and Far East call +44 (0) 1740 626075
USA, Canada and South America call +1 (724) 352 5288

What is the D3S wearable RIID?

It is a wearable gamma neutron RIID which can be networked to provide citywide protection or used as a stand-alone radiation detector.

Wearable, unobtrusive and hands-free it is continuously scanning for radiation: gamma-ray and neutron (so it can detect shielded devices).

No one can see it in operation, or that you have found anything suspicious. You can go anywhere a terrorist could have gone and search areas quickly and efficiently. Unlike static or vehicle-mounted detectors, a person carrying a hidden detector is tough to avoid and detect; literally, anyone could be carrying a D3S.

Who is it for?

Designed for anyone who is involved in the CBRNe protection of an event, person or location including:

  • CBRNe teams
  • Border patrol
  • Airport and seaport security
  • Personal protection officers
  • Police
  • Hazmat teams
  • Military
  • CBRNe professionals that need a small but powerful RIID

How do you use it?

The D3S wearable RIID is designed to be used by almost anyone.

Turn the detector on, launch the phone app, in seconds and you are good to go.

Armed with the D3S wearable RIID, you are a walking gamma and neutron detector, able to detect even shielded sources and identify the isotopes used. The D3S is hands-free, you can go about your duty as usual with the phone announcing any radiation found into your earbud or by vibrating – alerting you to take further action.

See the D3S wearable RIID in action

Two types of application


Stand alone detector

Perfect for fast and easy deployment in smaller numbers as a stand-alone device. Everything you need is on the detector and readable through the app.

  • D3S ID consists of a D3S detector, isotope identification app on Android phone.
  • All cables and user manuals are supplied in a rugged case.
  • The convenience of a PRD, the sensitivity of a RIID.
  • Real-time alarm and adjudication in seconds.
  • Isotope identification and neutron detection on Android phone




Networked detectors

Perfect for deployment in large numbers with detector readings and mapping to a central control screen.

  • D3S NET consists of a D3S detector, isotope identification app on an Android phone and access to the SIGMA Network.
  • SIGMA Network web interface for centralised viewing of all detectors in the network.
  • D3S NET can be deployed in rugged cases of ten units each or rack mounted to facilitate fast deployment.
  • Building blocks for wide area mapping on a remotely hosted server.
  • Provides analysis and visualization for a large network of detectors.
  • The data collected is stored in the D3S NET cloud system, hosted by the AWS (Amazon Web Services).
  • Remote, real-time identification and adjudication of alarm.
  • The phone also functions as a local identification device of isotopes.

D3S features

Fast deployment

It takes less than a minute to deploy: take it out of the box, switch it on, put the sensor on your belt, the phone in your pocket, and you are good to go. Using the D3S, you can quickly and easily equip anyone to become a radiation detector giving you fast coverage for a location.


  • One of the fastest and most accurate isotope ID devices on the market
  • Discreet, wearable, lightweight
  • A fraction of the size and a fraction of the cost of other RIIDs
  • Rapid, visible, audible and tactile alarm settings
  • Extensively tested and characterised in multiple DNDO and DARPA programs
  • Quick, simple and intuitive to use, no need for specialist training or knowledge

Easy to use

Specifically designed for use by anyone, specialists and nonspecialists alike, with minimal training required. The D3S can be used by staff across a wide variety of sectors, including customs and border patrols, police, first-responders, at airports, event security and environmental monitoring.

Far exceeds RIID standards

  • Identifies 17 more isotopes than RIID standard
  • Four times faster than RIID standard
  • Cheaper than standard RIIDs

DARPA tested and approved

Over 10,000 detectors are currently deployed  protecting the USA now

The D3S is deployed in major areas of the US by the US Defense Advanced Research Projects Agency (DARPA) as part of its Sigma programme forming a network of radiation sensors. They have been deployed by the New Jersey Port Authority and field-tested in Washington DC, followed the President to Europe and has been field-tested by other agencies around the world.
Kromek is a qualified contractor under the $8.2bn US Department of Defense Indefinite Delivery Indefinite Quantity (IDIQ) for the Joint Enterprise – Research.

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