In a Word

Use passwords. Don't use some simple terminology. Always use a combination of letters and numbers. Use some UPPeR case letters. Try to incorporate symbols, *&#@$, etc. Don't use known phrases or quotes from books like the Bible or Lord of the Rings. Try to combine things that make sense to you but not to others.

Here's a good site that explains the creation of good passwords, How to create passwords you can remember. Just please use a password. Something is better than nothing. One final note. Remember it and don't expect your technician to do this for you. His passwords are probably so complicated he has trouble just remembering the ones he has in place.

"Treat your password like your toothbrush. Don't let anybody else use it, and get a new one every six months."
~Clifford Stoll