Taxation of Undisclosed Foreign Income and Assets - Conceptual Nightmare!

Yeh concept kaisa hota hai? We're discussing section 4(5) of the Black Money Act, 2015. It states that if a person has any undisclosed income or assets in a foreign country, it will be taxed at the rate of 100% of the income plus a penalty of 200% of the income. But what happens if the tax has already been paid? Can you imagine how this is going to affect the poor foreign bank account holders? Is it even relevant in today's digital age? I mean, who still uses a foreign bank account? It's like the government is trying to give a bad joke to the entire country. Has anyone else seen this explanation in their coaching material? I didn't think so.