As I don't care about the programing language that would be use I thought I could just post this is the Chit/Chat section.

I've been thinking about this for a while and I really wonder if what I'm asking here is even possible.

Let's say I want to distribute some data on a USB Key, that I bought bought as I'm not a manufacturer, I don't want anyone on any computer to be able to modify the content of the USB device. I don't care if they copy what's on the device but I don't want them to be able to change it or copy something new on the key. How would someone do this ? How can I insert a program on the Key that would make sure that, unless you know the password the data is not altered. But the data needs to be readable at all time. Also need to make sure that the application doing that job cannot be deleted from the device

I already know that you can play in the registry add add some key to disable writing to external device but this only apply to the machine and not to the device itself so its not a good solution for what I'm looking for. I know that there are USB device with a lock switch but any user could just slide the switch so its not a solution.

I'm really looking for a software solution here.

Any suggestion is welcome !