If you decide to go with an agency that specializes in computer insurance, be sure to check up on both the agent and the insurance company underwriting your policy before you buy. Be especially wary in airports and hotels, where laptop thieves are likely to target business travelers. Do not leave your laptop in the back seat of your car, or even in your trunk. When you're going through a metal detector, keep your laptop in your hand until the person in front of you has already cleared the scanner. Do not put your bag on the conveyor belt until you can follow it right through.
Security stations are a common place for teams of thieves to work.
One person will set off the metal detector, holding up the line, while the other person grabs the laptop a hapless owner set down on the conveyor belt too early. When you travel with your laptop, carry it in something that doesn't look like a laptop carrying case. A briefcase, a duffel bag, or a knapsack are all better choices and make you a less likely target. Keep the laptop's serial number, model number, and make in a separate location. That will make it easier to recover if it's ever found.