How can barcodes have a small amount of squares and we still don’t run out of barcodes?

Question

How can barcodes have a small amount of squares and we still don’t run out of barcodes?

In: Technology

Answer 1

n squares can code 2^(n) values.

10 squares is about a thousand. 20 a million, 30 a billion.

100 squares (10×10) is enough to index every website on the internet.