Under lock and key:
Suppose you want to send in the mail a valuable object to a friend!. You have a box which is big enough to hold the object!. The box has a locking ring which is large enough to have a lock attached and you have several locks with keys!. However, your friend does not have the key to any lock that you have!. You cannot send the key in an unlocked box since it may be stolen or copied!. How do you send the valuable object, locked, to your friend - so it may be opened by your friend!?
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Answers:
I suppose you could send the object, locked, to your friend!. He puts his own lock on it, in addition to yours (since he can't unlock it) and sends it back!. You can take your lock off now, since your friend's lock is there!. You send it back, he has the key to his own lock so he can open the box!.
It'd be easier to just pay for postal insurance!.Www@Enter-QA@Com
It'd be easier to just pay for postal insurance!.Www@Enter-QA@Com
Your friend sends you a lock with 2 keys, but the friend keeps one of those 2 keys and you use that lock to seal the valuable present with the other key!.!.!.so when your friend gets the present they can open it with their key!?Www@Enter-QA@Com