Simplified Cangjie (簡易 or 速成) is an input method in which the user enters only the first and last keystrokes used in the Cangjie system, and then chooses the desired character from a list of candidate Chinese characters that pops up. This method is popular in Taiwan and Hong Kong.
Simplified Cangjie is one of the few input methods which has an IME pre-installed on Chinese-capable personal computers.
In Cantonese-speaking Hong Kong, average computer users tend to prefer Simplified Cangjie over the full Cangjie largely due to its ease of use, and also the lack of other input methods available that matches its popularity with it being pre-installed IME on most Windows operating systems. Since Chinese phonology is not taught in schools in Hong Kong and Cantonese is more tonal than Mandarin (Putonghua), phonetic-based input methods designed for Mandarin speakers such as zhuyin are not widely used.
While having an easier learning curve and generally considered as a more error forgiving input method, in the long term Simplified Cangjie users have slower typing speed compare to full Cangjie, because the user chooses from a list of candidate of characters. On the other hand, using Simplified Cangjie also discourages the user from learning the full Cangjie. Many simplified Cangjie users do not understand how to code a character without the disambiguation lists.
Because of the selection from lists, use of simplified Cangjie can be compared to "hunt and peck" vs. ordinary touch typing (whence the much greater speed obtainable by those who learn regular Cangjie).