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.
They can access to bitcoin s long as they are knowledgeable and have an interest to bitcoin, so sad for them if they don't have an interest of how to manage it to run