Manufacturing cost too much,
Accuracy non existant unless pins are ground thus more cost,
The lock would still be easily picked if not more so because you would be able to chip off the corners of the pins and make the binding easier,
Wear,
Inserting the key could break the pins,
Dropping the lock or heavy bumps in delivery could break the locks,
Someone kicking the door could break the lock,
Someone slamming the door could break the lock,
Broken seal means broken lock means locksmith callout everytime,
Spool pins that have edges broken off the steps would then leave glass bits that jam the lock,
A bump key would destry the lock,
Theres others but i think you ger the idea,
You are trying to invent somthign already hapily covered, you describe a tamper seal which are alreay out there in a much easier package like tie wraps etc, useualy somthing needs to be locked or sealed if its both theres hardware on the doors thayt allow both in which case you can then have insurance approved locks for locking (a glass pinned lock would never be alowed to be used as a locking device as a hit on the front will render the lock useless even a screwdriver would open it in less time than the key), for sealing they use just that, a seal, thats anything that can be seen to be intact or not hence entry to the area has been gained or not,
What you have done is come up with somthing that will not fit in either scenario, you have a lock that will not be suitable for locking anything up and a lock that is pretty useless as a seal,
Fair idea but pointless developing it, keep thinking and come up with somthing worth developing
