I’m increasingly scared about the hellish misuse of firearms, so today’s invention attempts to limit the damage which can be done from afar by the use of telescopic sights.
Such a system would have built into it an iris-recognition device, of the type routinely used in other security applications.
On purchasing the sight, it would be trained to recognise only the iris of the purchaser.
When later attached to eg a hunting rifle, the sight would only open an internal shutter, enabling its use in aiming, if the recognition software remained satisfied the the weapon was pressed to the eye of a licensed hunter.