1000 and 500 notes

In todays surprise mann ki baat some revelations were made. 
Advantage
In short-People with black money are stuck from both sides.
If they don't submit their money in a bank account (which is exactly what people do to hide black money) their currency loses value and its as good as nothing.
If they submit money in the bank then they are accountable for money and need to pay tax for the same amount.
Government wins both way

RBI to issue ₹2000 Rupees Notes coming February 2017

Not just a piece of paper There is much more in this note Read the full content of this message

India is all set to add one more denomination to its currencies shortly. The Reserve Bank of India (RBI) will be issuing Rs 2,000 currency notes, the highest to come into circulation, even as some experts feel7 high-value denominations should be discontinued to curb black money.

The Rs 2000 currency is designed keeping in mind to eradicate the black money issues using state of the art indigenous nano technology, every Rs. 2000 currency note is embedded with a NGC (Nano GPS Chip)

How the embeded NGC Technology Works?
The unique feature of the NGC is it dosent need any power source. It only acts as a signal reflector. When a Satellite sends a signal requesting location the NGC reflects back the signal from the location, giving precise location coordinates, and the serial number of the currency back to the satellite, this way every NGC embedded currency can be easily tracked & located even if it is kept 120 meters below ground level. The NGC cant be tampered with or removed without damaging the currency note

How will this help eradicate black money menace?
Since every NGC embeded currency can be tracked. The satellite can identify the exact amount of money stored at a certain location. If a relatively high concentration of currency is found a certain location for a longer period of time at suspicious locations other than banks & other financial institutions. The information will be passed on to the Income Tax Department for further investigation

Just a beginning of the end of black money in india. A person with relatively small stack of black money can break it into various parts and try to spend 'hard cash' as much as possible within the 50 days time span

Example- If a person X has 15 lakh rupees in black money he can spend the same money to buy certain stuff Like commodities or gold or electronic items which can be hidden from government by not making a bill of purchase