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March 5, 2009 9:02 pm at 9:02 pm
#1068295
feivel
Participant
You want to send a valuable object to a friend securely. You have a box which can be fitted with multiple locks, and you have several locks and their corresponding keys. However, your friend does not have any keys to your locks. How can you send the object securely?
you could send him the key in a separate envelope, but according to my rules i am eliminating this as an answer, to make it more difficult