I purchased a chinese affordable wireless mouse (zero reviews, found in "newest arrivals") from amazon.co.uk
I'm not sure if it's merely a psychological affect, but when I use it I feel sort of funny, as if it's emitting ionising radiation. Is it possible that the laser, or any other mechanical component within the device is harmful?
Humans can't directly sense electromagnetic radiation other than light. Some wavelengths can be perceived indirectly. For example, you can feel the heat generated by microwaves (it's the same effect that heats up food in a microwave oven).
The effects of ionizing radiation are too subtle to be perceived indirectly. Ionizing radiation is dangerous precisely because it's imperceptible and its effects are cumulative.
If you can actually feel getting blasted with ionizing radiation then you have nothing to worry about: you'll be dead within days. However, the conditions that might be able to produce such intense radiation do not come about accidentally. For example: https://en.wikipedia.org/wiki/Demon_core#Second_incident
Is it possible that the laser, or any other mechanical component within the device is harmful?
In theory, you could go to a restaurant and be poisoned, or your ISP might change every incoming packet to your house and replace the string "C++" with "DONGS".
Yes, when you buy something from someone you're implicitly trusting them to some degree. Unless you're willing to expend the effort to check everything you buy (I assume you're not willing, because that would be a serious undertaking for just about anyone) or to build everything yourself, what's the point of even considering such scenarios?
That doesn't answer my question. Do you have the means to check everything you buy? Do you have the option to obtain those products from different sources, or to do without them, if you find them to be faulty? If the answer to either of those questions is "no", what's the point?
Do you have the means to check everything you buy? Do you have the option to obtain those products from different sources, or to do without them, if you find them to be faulty? If the answer to either of those questions is "no", what's the point?
q1.No
q2.No
I was merely fantasising becoming a successful online merchant who sells unsuspicious but nefarious products. Sorry, I did not mean to imply I thought this mouse was nefarious.