Siri Bhoovalaya is a Kannada literary work entirely written in Kannada numerals believed to be the only book of its kind. It was written around 800 AD by Sage Kumudendu and comprises 1270 number charts arranged in a 27x27 matrix. The matrices contain 64 Kannada numerals assigned to phonetic alphabets and hidden within are claimed to be 718 languages, scripts, religious texts and scientific information. To decipher the book, the numerals are read using defined patterns called 'bandhas' which is a form of ancient Vedic cryptography.