Probably the best thing about having a notebook computer is its portability. But with that portability comes the threat of theft. How do you keep your notebook from becoming mobile with someone other than yourself?

One way to deter thieves is to personalize your notebook. It sounds a little too simplistic, but a thief is less likely to walk off with a computer with someone else's name plastered all over it. You can get identification tags, which are then mounted on your notebook and can't be removed without damaging the computer. Plus, if your laptop is stolen and recovered, it will be that much easier to return it to you.

Using a security cable, which easily snaps into a standard security slot that is on the back of most notebooks, is another way to prevent your laptop from disappearing. The cable can be looped around a fixed object, such as a desk, functioning pretty much like a standard bike lock. Security cables are priced around $20 to $50, and some higher-end models even have alarms.

Most security cables are made to be light enough to travel, which is great until you come across a thief with a good pair of wire cutters that can slice right through your cable. Think about using a security cable along with another form of protection.

Another inexpensive option is to try to disguise that you've even got a notebook on you. The standard black notebook bag that screams, "Hey! I've got a laptop in here!" may not be the best choice of carrying case. Look into trying a bag that isn't so obvious. For example, you can get bags that are shaped like backpacks, but are specifically designed to carry notebooks, so they are the appropriate size and have the right padding.

But the sad truth is that your laptop is vulnerable to theft not only when you're on the road; it can also be swiped from your own office. Another security option is a docking station - although a docking station primarily enables you to use your notebook as your desktop and peripherals when you're not on the road, it can also be a security device. Some higher-end docking stations, priced at just less than $1,000, have secure locks and alarms.

What may be even more devastating than losing your notebook is losing the data on it. Always remember to back up your information. If your notebook is carrying sensitive data, you may want to take steps beyond simple password protection. Encryption software codes your documents so only authorized users can read it.

There are different levels, from basic encryption that can be downloaded for free to complex software, which can run as much as $100, that will encrypt everything on your hard drive.

The feeling of freedom when you have a notebook computer is definitely dampened by the fear of theft. Fortunately, there are some inexpensive antitheft options that, when used together, can give you prison-like security when you're on the go.