This kind of pen flash drive is popular and sellable.

When it powers off, the data cannot be lost.

�P Radium light
�P USB plug and play without extra power supply
�P High speed reading and writing speed: USB2.0/1.1
�P Support USB full-speed (12Mbps) transmission
�P In Win me/2K/XP, Mac9.0 above, Linux 2.4 above, no driver instrallation needed
�P Driver support Win 98/98se
�P Support boot up by USB-HDD or USB-ZIP mode
�P LED indicator for status display
�P Password protection and data encryption prevents unauthorized access to data
�P Application software support in Windows OS.
�P Security function with the application software
�P Resize (Partition) available with the application software
�P Available in capacity of 64M/128M/256M
�P The real ball pen function & style