Hello, I have to do a program for a Thin Client (here are it's specifications, sorry if it's in italian: http://www.microdata.it/desktop/thinClient1.pdf)

I never coded something for a thin client so I'm a little confused. Which language would be the best? Note that it must be a language which assures very high security, because the program I'm going to do has to connect to an sql server via a normal internet connection. It would be better if I could lock it to the hardware of the thin client so it won't run on any other PC. Code protection from decompiling is also highly important.

Thank you for your help.