payment module question

[neunetllc.com]

hey fellow zenners... i'm working on a payment module for zc and was considering how to optimize security.

1 design consideration was whether or not to use standard text fields for data entry and display. not using them would mean added security.

so here's a partial solution in the zip file. it doesn't do anything other than display text you type in. you can't copy and paste into or out of the file.

i'd like to know if you think it would gain customer confidence or not. thanks.