they can get bitcoin in paper form like what you get when using Bitcoin ATM.
pieces of paper with public and private address after that they can import the private key to any wallet "just show the private key to any scanner" and get the money.
Important point
you must have some knowledge and internet access to use bitcoin.
paper sheets that can later be exchanged, maybe you mean is a kind of atm, and what if atm is lost or damaged, if I think the more bitcoin known to many people, the internet communication technology will be more extensive network and so everyone can access the internet free, so all good people rich and poor can deal with bitcoin