1. Give 20 million to your political cronies for "R & D" on the new tax.
2. Generate publicity that creates a huge public furor over privacy issues.
3. Wait until even your fiscally conservative opponents are railing that you should just increase the fuel tax.
4. Make a big deal about "listening to the people", then cancel the unworkable plan, raise taxes and make everyone happy.
5. Profit!

I use SVN to backup my sister's important stuff to my home server. It was easy to teach them to commit changes and add new files to be versioned because I installed Tortoise SVN on their Windows computers. It has full versioning and can use an encrypted link if that's important.

Everything else just seemed like too much work to implement.