In Wikipedia's description of the Observer Effect wrt particle physics, we have this:-
For an electron to become detectable, a photon must first interact with it, and this interaction will inevitably change the path of that electron.
Surely a photon is not the only way to detect an electron. Photon emission means that we might actually see the electron's presence (with a magnifying glass or something). But electrons have charge and interact with other charged thingies, so they could be detected indirectly through other means couldn't they? And that's not even getting into detection via the electron's mass or momentum.
Is this just an example of sloppy language, or are photons always involved even if electrons interact with other +/- charges?