You can boot your computer into Ubuntu using the USB, which includes everything you need to securely generate addresses. Very easy to use device!
Thanks for the review Zeroxal! I really appreciate you taking the time to write on my thread and I'm glad they made it quickly! I was worried with all of this talk of a Canada Post strike that they would be stuck in Canada until this all blew over.
Let me know if you need any other guidance on generating paper wallets.
In order to truly ensure that it was secure, you would need to get a copy of everything on the usb from a reputable source and perform a diff to ensure that no malicious code was added inside it. And at that point, just downloading it from the source would be easier.
Nothing could be sent to a server because you're never connecting to the internet while on Ubuntu. So if anything was sent while you switched over to Windows it would just be your part private key (which is useless without the other part)
I'd say do whatever you need to in order to confirm there's no malicious software and if people don't want anything but an Ubuntu Live USB then I won't include Vanitygen or the downloaded version of Bitaddress.org. My whole idea was to make it simple for people with everything you need included and a step by step guide to go with it.
I haven't added any code into Vanitygen or anything else on the USB for 2 reasons:
1. I'm not out to rip off someone who just bought something from me
2. I have no idea how to write code of any type so whatever Vanitygen is written in is a foreign language to me!
Like I said though, if you'd like me to omit extras I can very easily do that and if you're able to test it in other ways then I suggest you do so so you know you're 100% safe.