Now that's a toy you don't stumble across very often! Not sure what I'd do with it, but others may have a use: https://www.radiacode.com/
Radiacode – Portable Radiation Detector, Dosimeter & Spectrometer

Radiacode is a fast, portable radiation detector, dosimeter, and spectrometer with real-time analysis. 20× faster than Geiger counters, it identifies isotopes, tests food for contamination, and supports research and safety.

@cstross

These come in handy in construction work, truly: I own two dosimeter/detectors and carry them in to buildings sometimes to check rebar and other metals that are a little "too hot" if you catch my drift...