Can passive income be used as a retirement strategy, and what factors should I consider?

[bestwriter]

When one has stopped working sources to look for are those that can generate passive income.

 

[King Belieal]

Passive income streams such as real estate can easily be used to provide an income source for when you retire. But it must be substantial investment for it to serve the purpose.

 

[Shavkat]

It would be great to have this idea. Unfortunately, I have not found anything that could earn passively.