Perhaps it has to do with my life experience, but I really don't understand this fear. Working in my dad's store as a kid, I was used to always carrying cash in my pocket. As a criminal lawyer, most of my clients didn't have a checking account. On my first date with my wife, I had to pick up money for dinner from a client who walked out to my car and handed me a wad of bills. I'm not saying you shouldn't be careful, but it's a hell of a lot easier getting a wad of paper off of me than bitcoin off my phone.