Beta Safe Than Sorry

There is an entire world of radiation around us at all times that, for the most part, we cannot see or feel. Most of this radiation, like ultraviolet and infrared light, is completely harmless to us. But there are also high-frequency waves like gamma rays and the fast-moving particles associated with nuclear radiation that are capable of doing us quite a lot of harm.

While it is true that nuclear radiation is everywhere, unless you happen to work at a nuclear power plant, with certain medical imaging equipment, or in a handful of other high-risk industries, you do not have a lot to worry about because the intensities are so low. But some people are just naturally curious (or unreasonably nervous) about such things. For them, a device called Doze might be of interest.

Doze is a pocket-sized radiation detector designed to bring Geiger counter technology to everyday consumers in a compact, accessible form. Measuring just 59 x 34 x 13 mm and weighing less than 35 grams, it is one of the smallest and most portable dosimeters on the market. Despite its size, Doze is packed with features that make radiation detection easy, intuitive, and even customizable.

At the heart of Doze is a built-in Geiger counter tube, which is tuned to detect beta and gamma radiation. It provides real-time readings of radiation levels in the environment, offering immediate feedback through both an LED indicator and an audible clicking sound — the same way traditional Geiger counters operate. The frequency of the clicks increases with higher radiation levels, making it simple to assess potential exposure at a glance. It also tracks exposure over time, and if radiation levels rise above a user-defined threshold, Doze emits both visual and audible alerts, helping users stay aware of their exposure without actively checking the device.

Unlike most Geiger counters, which have fixed functions, Doze allows users to upload custom firmware to its ATtiny167 microcontroller via its USB-C port. This opens the door for hobbyists and professional engineers to modify and personalize their device. Whether adjusting alarm settings, integrating additional sensors, or even repurposing Doze as a platform for experimental projects, the customization options are extensive.

The device has an exceptionally impressive operational lifespan of up to a year on a single charge, meaning users do not have to worry about frequent recharging. When it does need power, it is delivered via the USB-C connector for fast and convenient recharging.

Aside from those with workplace-related risks, Doze may be useful for travelers visiting regions with higher natural background radiation levels, individuals working with potentially contaminated materials, and those who simply want to assess the safety of their environment. Furthermore, it can be used to test everyday objects, including foods such as seafood, fruits, and packaged goods, helping users ensure that their meals meet safety standards.

Whether used for safety, science, or curiosity, Doze sets a new standard in personal dosimetry — combining advanced functionality with a user-friendly design in a way that no other consumer Geiger counter has before. If you would like to try it out for yourself, the device is currently being offered on Kickstarter with rewards starting at around $62.