The locks are interesting. The keys have magnets imbedded in them. The key is held vertically against the left side of the lock, where the is a shallow divot to help position the key in the correctly. There is no keyhole. Internally, there are magnets which, when repelled by the magnets in the key, free the shackle to be opened. As I recall, there were no springs in the shackle to make it pop open.
They were a cheap lock, but for the uninitiated, they would not get past it without bolt cutters or other obvious tools of destruction. However... no keyhole to drill.
Would not mind getting one for my collection, now that I am reminded of them.
Gordon
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