One great tradition of Chinese culture is having your own seal. Emperors and nobles would have their own seal that they would use to stamp documents. This tradition trickled down through the generations to the point that now everybody in Taiwan has their own stamp with their name on it.
It's not the big beautiful art pieces that past wealthy people used, just a small wooden stamp with their name printed on it. Everybody has one, as it was used for almost every official document and contract. I remember when I first was in Taiwan there were some banks, cable companies, and other things that required a stamp and if you didn't have one, than no business.
This has pretty much ended though as nobody uses their stamp much. The only time I've seen is used in the past few years is on apartment rental contracts. Since foreigners don't usually have a stamp, they usually stamp their thumb on the lease.
As you can see I have one. I have totally forgotten that I have one. I remember some bank made me use one about eight years ago so they just made one for me. I never use it because i don't really get the point. The way it's written on all stamps is that that it's just your name printed. No special art to it, not is it a copy of your signature. So I really don't see why they are even used. Anybody could do the shops that make them and tell them somebody else's and then be stamping things pretending to be that person. I'm guessing this is why stamps aren't used much anymore.
