[nephihaha]

I think it is arguable whether quipu is a writing system or not. I remember arguing years ago that it was, when mainstream linguistics argued it was merely mnemonic, because the quipu system reminded me slightly of ogham. Nowadays I think of it as proto-writing.

Depending on what you consider South America, and it is a Chilean territory, Easter Island has a mysterious script which seems to have caused endless arguments. The Easter Island system certainly looks like a script, but where it comes from and whether it was invented there is another question. Easter Island isn't near anywhere.