In general, the idea is that the mark will provide rewards to those in obedience to it's system. The patent doesn't go into all the details. It will be tied to a centralized monetary system. If the smart phone , or whatever they have it linked to, tells someone to do something then they will be monetized for obedience. When they disobey, or associate with anyone who has been disobedient, they will have funds deleted. Perhaps they will not get a synthesized meat ration for the month of fake food. These billionaires that say that you will have nothing and be happy, and you will eat bugs, have the plans. Sometimes they describe those plans in their speeches and books.
The benefits will be huge.
1. If you have a digital ID inserted in every person that can be read by a RFID reader then the government will know where each person is at any given time. As a result it will be much easier to solve a crime.
2. Also there are times when the government sees a need to act criminally "for the greater good" (for the benefit of those in power). Controlling this database would give them unquestionable authority (forget trials, they can simply seize criminals).
3. Also, for criminals why pay $50,000 a year to house them in prisons, simply cut off their ability to buy or sell.
You can eliminate lawyers, courtrooms, trials, and prisons. That is a huge savings.
Also, by eliminating cash how can a thief rob anything?