[Bungleau]

The government already monitors your financial activities. Your income is reported by your employer to the government. If you have a financial transaction greater than $10,000, that's reported to the government. When you buy a car or a house, that's reported to the government. When you pay your taxes (and when you don't!), that's reported to the government.

And if the government finds you did something wrong, they can go back and search any records from as long ago as they choose to see if you might have done something else wrong.

Note that my examples above refer to the US. Other countries may have different laws and approaches, and I certainly have not visited them all.

So you're already tracked. It's just getting easier, and getting harder to evade your own responsibilities.