It was actually a really lucky thing that the person who was in the house had no idea about Bitcoins or about the wallets that can be used. Then again cash does not provide any us with the security that bitcoin does. After a limit amount of attempts even  your wallet locks up. It is really good if the person using the cryptocurrencies is taking care of all the internet security since the only way one can find a loop hole is using wrong wallets and most of the time it's personal problem.

But that aside please accept my condolences for the problems that you faced.

But I do believe that wearing it as a necklace as one of you did is not the safest deal since people have been stealing good chains and stuff in the middle of the day so if someone did think it was important and had bad intentions it would be troublesome.