关于pssh: SSH 2 for Palm OS 5 介绍：
pssh 是运行在Palm OS 5上的免费开源软件.
特点：
· SSH 2 protocol using 3DES or AES-128 ciphers
· Fast authentication and encryption using ARM-native code
· Support for public-key authentication and host key verification
· High quality VT100/VT220/xterm terminal emulator
· Up to 80 x 53 character display on 320x320 screen
· Support for large screens with virtual Graffiti areas
· Customizable font colors and sizes
· Full-size on-screen keyboard
· Palm 5-Way Navigator acts as CTRL/ESC key and arrow keys
· Thumb wheel press acts as CTRL/ESC key
· Complete source code distributed under BSD- and MIT-style licenses

Pssh在palm手机上的使用截图：

关于palm 650的详细介绍：
http://product.pcpop.com/000027925/Index.html
http://tech.sina.com.cn/mobile/n/2005-03-01/1157538683.shtml