Explaining bitcoin to the newbies is really a difficult task and specially to those who are unaware of the Digital technology. Those who are having a little knowledge about the crypto world or the Digital technology are easy to tackle and to explain about the bitcoin.
Someone who is "unaware of the digital technology"? I am not sure I have encountered someone like that in my lifetime. Maybe you meant people who are not accustomed to digital technology? In this case, it is true, it is difficult to explain cryptocurrency to someone who does not use at least the basics of modern technology.
This is a really good idea. They can't understand bitcoin at all if they don't know how to use technology. Well, this is typical of third-world countries, where there are still areas without internet or cell phone service. In most rural areas, people have no idea what a computer or an Android phone even are. In those remote areas, people do have phones, but they aren't android or iphones; they just use them to make and receive phone calls and text messages. This is a good start, however, because it will evolve over time and they will eventually begin to use the internet.