psychotiller said:
So which is it? Bluetooth or 2.4 ghz?
I can't access the article (blank page, old browser) but AFAICR, BT uses a 2.4ghz-area signal, just like many forms of license-free wireless connections.
Regarding hacking (or even just jamming) a wireless vehicle control connection, this is something I brought up some time ago as a potential issue, though I forget what vehicle it was about. :/
There's a few things you can do to make a hack tougher, such as encoding the signal in the hardware prior to transmission, decoding it at the other end, with a long key that you can program in when setting up whatever other programmable parameters the vehicle has. If the MPUs used are fast enough, it shouldnt' affect the operation of the device, and would be transparent to the user. A dedicated MPU could be used just for the encode/decode if necessary.
Jamming, on the other hand, you can't directly protect against. If the signal can't get thru, or is unintelligible because of interference from whatever source, the controller just needs a "graceful" shutdown sequence that does the least harm to the vehicle and user.
Especially on a board there's probably no way to guarantee *no* harm, because if one is accelerating on the board to get out of the way of something, or is actively braking (regen/etc), or whatever, and the shutdown turns off the system to let you coast to a stop, you may well either not get out of the way or stop in time.
But if the board is setup to simply continue whatever it's last command was if it loses comm with the wireless controller, then you could have a much worse problem if the signal is deliberately jammed. Hopefully none of them are designed that way.
Anyway, those are just a couple of thoughts. I think I had more in my old post about it, wherever that is at.