The advice i got from some barcamp peeps was "do not bring anything to DEFCON that you cant afford to get hacked". One fellow is a security consultant and the other manages networks for a financial institution. They could have been being dramatic for effect, but why risk it? I know enough about programming to know that I cannot secure my devices against a determined foe (unless you count the power button - but hey there's conspiracy theories there too right?).

So the advice was: disposable pay-as-you-go phone and craigslist it afterwards. Same for laptop. Don't bring them home.