Paragon Software Group (PSG) develops bilingual and monolingual dictionaries using unique Slovoed technology for 35+ world languages including Chinese, Japanese, Thai and some other unique ones, which comprise quite a number of characters and hieroglyphs. Dictionaries based on Slovoed technology have become problem solvers for the users, who, let's say, are learning Chinese, but are native speakers of English. Paragon Software Group (PSG) takes care of their customers and strives to provide the best user experience. That's why we integrated proprietary PenReader handwriting recognition in most of its apps. The history of PenReader handwriting recognition technology begins in 1968, when a group of Russian scientists has established the idea of machine recognition of handwritten text and worked out the fundamental Zenkin-Petrov's recognition algorithm.

This algorithm underlies the first and the most primitive handwriting recognition instrument "Optical Correcting Recognition Universal System" (OCRUS). This tool was used to recognize ancient Tibetan text automatically and convert it into the digital format for further scientific analysis. While a user is writing with his fingertip on a touchscreen, behind the scenes PenReader is doing a great job - it collects and analyzes the coordinates of the finger movements, then converts the data into print characters. Sounds easy, doesn't it? But in fact this work is unbelievably resource-consuming. PenReader calculates about 5630 execution paths to get the most precise coordinates and performs 66852 statements to convert these coordinates into print-like text. Moreover PenReader has its own specific set of recognition rules for 34 languages and this list continues to grow. Moreover PenReader has its own specific set of recognition rules for 34 languages and this list is constantly is being populated.