Emily

PSTK (Palm Screen Thumb Keyboard) is an on-screen qwerty keyboard software designed for palm powered devices with 480x320 screens (320x320 devices are also supported though), it enables you to smoothly input English and Chinese characters as well as symbols with your thumbs. 

As the author of PSTK, I've been playing around with serveral other on-screen thumb keyboards for quite a period of time, including mini-keyboard, thumbboardDA, they are great but lack of the ability to input Chinese characters, plus some other flaws. VerveInput, another virtual keyboard was developed by a Chinese but has a modified layout which I personally am not willing to adapt with. So I wrote PSTK to replace them, the goal is to input both English and Chinese easily and fast with thumbs while holding the palm horizontally. PSTK does a good job on my TX, now I spend more times on my TX writing diaries,  tasks and memos, what's more, all of them can be done on a bumpy bus without any difficulty. 

PSTK is shareware, giving you 100 times of free trial. If you feel it useful and want to use it longer, please support and register this software by purchasing it, version upgrading is free for registered users.

Most recent version of PSTK can be downloaded here (PSTK Builder is the PC side software used to make your own keyboard layout):

Download PSTK(121K)   Download PSTK Builder(Coming soon)

Features:

• Thumbs' favorite big on-screen buttons
• Customizable keyboard layout
• Also supports 320x320 devices
• English, Chinese and Symbol mode
• Cancellable editing (symbol+z)

Installation Instructions:

1. Sync PSTK.prc to your palm, Sync "PSTK Phrases.pdb" also if you need next Chinese word suggestion function.
2. Sync PSTK_Classic.pdb and/or PSTK_ThumbboardDA.pdb to your palm, they are skin files, you need at least one of them.
3. To input Chinese characters, you need to download at least one Chinese code table in PocketIME format. e.g. http://www.51pda.cn/bbs/htm_data/88/0607/861.html, http://www.treo.net.cn/down/data/soft/288.html
4. To input Chinese characters, sync above database(s) to your palm also
5. Uninstall or disable other virtural keyboards, e.g. CJK Pinyin, mini-keyboard
6. Activate PSTK in its main window, Use 5-way right button or keyboard menu to popup PSTK, enjoy!

System Requirements:

• Palm devices running OS5 or later 

Screenshots:

Preferences	Extended Mode
Normal Mode	PSTK Builder

Purchasing:

Outside China users please pay with Paypal, the price is US$9.95. (Please also send your Hotsync id to emilyying_pstk(AT)yahoo.com so that I can send you the registration code. As I don't check the mailbox that often, it might take several days to receive the serial number, please understand.)

Price: US$9.95 

Limitations of trail versions:

1. Keyboard can be opened for at most 100 times
2. Text length is limited in 40 characters (or 20 Chinese characters)
3. Must manually enable PSTK after restart

Registered version does not have these limitations, and upgrading is free.