Imagine you're a poor person who lives in a hut in the country. You make a living by selling handmade items in the city. You have a little money saved but cannot open an account at the bank because you have no ID and no birth certificate. Your modest savings is stored in a box under your bed and is literally being eaten by moths and inflation. You have friends in the US who send a few hundred dollars a year via Western Union, which takes a big chunk of it. Your stateside friends would like to send you Bitcoin. You have a smartphone, but it only has a data signal when you go to the city. Buying a hardware wallet or spending money on any other type of equipment is out of the question. Given these circumstances, how would you secure your Bitcoin?