Its security system prevents it from being started if the computer-encoded key is missing. It does nothing to stop someone from stealing it for parts.
Try leaving a $5,000 bicycle on the street without chaining it to something. Let me know how that works out for you. The difference bteween a Segway and a motorcycle is that a motorcycle is heavy and rather large. To steal one you need a pickup truck with a ramp, and it’s a very visible, loud, and time consuming process to grab one. A segway? Two guys jump out of a car, grab the Segway, and throw it in the trunk.
If I owned one, I wouldn’t leave it anywhere unattended. And they are forbidden in most buildings.
I always thought the Segway was going to be a flop. That stuff about them being safe for sidewalks is ridiculous. Getting hit by one going full speed would be like getting hit by a man running down the street holding a steel bar in front of him, with a heavy metal plate at ankle-breaking height. They are dangerous on sidewalks unless they are slowed down to a normal walking speed, in which case you might as well walk.
Even the one area where I thought they’d be useful turned out to be a dud. I thought they’d sell a zillion of them for mail carriers. But a couple of post offices have tried them, and the mail carriers don’t like them. It seems that mail carriers sort their mail while they are walking between houses. When they are on the Segway, they can’t sort mail. So they can drive between houses faster, but then they have to get off and sort the mail, which takes the same amount of time. So they save no time, but they have this machine they have to take care of, load and unload at the start and end of their routes, etc.
No doubt there are some niches were a Segway makes sense. But I don’t think it’s nearly enough to support the business plan. My guess is that the Segway company will either go under at some point, or the Segway will be picked up as a product by some company like Honda and they’ll find a way to lower costs and sell them at a price point where they make sense for more applications. At $500, or even $1,000, they’ll start selling them basically as toys for people who want to take them on vacation to get around, and to security guards in buildings, etc. But at $5,000 you have to make a serious business case for them, and “Hey, that’s cool” doesn’t cut it.