This is an old post from 2013. Who is still doing in-person cash transactions and how are you doing them? I have not done an in-person Bitcoin transaction before but I have P2P using Cryptolocally. They also offer a non-custodial escrow service for cash in person. Id be interested to know how you conduct in-person cash transferss now 
People are still doing them through so many p2p trading platforms like localbitcoins and localcryptos that will act as their escrows, especially if they are from the same city. Let's say some want to buy Bitcoin in exchange for cash. If you are from the same city, you can open a trade and the Bitcoins go into an escrow. You go meet the person who then gives you the cash, and then you release the BitcoinsWhat if someone comes in with a gun pointed to your head?