Data integration can be explained in simple terms just like in this article,it can be used & interpreted in various ways. Indeed, is a broad concept.

Imagine having a great idea for a product. You are convinced this new product will make millions of dollars and launch your company into new levels of revenue. After the initial inspiration, you book meetings with every available VC and angel investors. In those meetings, you talk about what inspired you and why your idea will work. You show them your notes, and why they need to invest. Depending on the idea, the investor will look at everything and tell you what a good idea this is.

The level of convenience, accuracy, reliability, and security of IoT-based biometrics is irrefutably high. Thus, we can surely say that while integrating this may not be compulsory, it definitely is beneficial and helpful for us.