Thefour-corner input method (四角號碼) is a way to organize Chinese characters, which are numerous, and input them into computers. Each character is represented by the shape of each of its four corners plus the stroke over the last corner.

EnglishWikipedia has an article on:

Four corner method

Wikipedia

For explanations on this method and an online dictionary, see:

• http://dylansung.tripod.com/methods/fourcinp.htm
• http://kanji.sljfaq.org/four.html

These indices rely on thekFourCornerCode of Unihan Database.

• Chinese appendices