They say that the plan is to use existing radiation detectors at ports. Another article [1] mentions that the isotope emits Gamma rays, one of the types of radi

They say that the plan is to use existing radiation detectors at ports. Another article [1] mentions that the isotope emits Gamma rays, one of the types of radiation that can be detected by a Geiger - Muller tube. [1] https://www.extremetech.com/science/scientists-turn-to-radioactive-isotopes-in-the-fight-against-rhino-poaching https://www.extremetech.com/science/scientists-turn-to-radio...