iPods with Click Wheels
So you’re thinking, “What should I do if I lose my iPod? Can someone use it?" If it's an iPod with a click wheel that you lost, someone might be able to use it, but not under certain conditions.
Apple iPod products with click wheels, such as the iPod Classic or the iPod Nano, typically don’t have any protection on them. There is a sliding lock button at the top to keep the device from getting turned on accidentally, but there is no way to lock the device itself from being played.
However, Apple is sensitive about ownership, so in order to use iTunes to add or delete music on iPods with click wheels, an individual must have the email address and password for the owner’s account. If they don’t, there’s not much they can do to change the songs on the iPod. Plus, if the owner has already authorized their iPod on Apple’s limit of five computers, it’s less likely someone else can use it.
That being said, there are other programs that manage iPod devices, such as Copy Trans Manager. This free software is great for people who don’t like iTunes, but in theory, it could allow someone who did not own the iPod to change the songs on its hard drive.