I watched a demonstration of the used of a claymore on a group of eleven targets and only one target was not hit and every other target had at least two hits from the claymore. Its simple to use and when properly used highly effective
The Claymore mine was in use in the 70/80s but was replaced many years ago, not sure when, by the Projector Area Defence (PAD mine) which I assume is still in use. Also we always used them both as command detonated mines for anti-personal/anti-armour ambushes; never on a tripwire although they could be.