This is the first paper I've read about ad-hoc wireless networks that talks about managing security settings for devices without GUI's (like a Bluetooth headset). Basically, the idea presented is for a new device to "imprint" on the first device presented to them via a physical connection (kind of like a duckling with it's parent). From then on the device will look only to that first device for security issues. If the device owner want to sell it, or transfer it to another parent, the owner can kill and resurrect the device so that it can imprint again.
Bluetooth and other short-range wireless proponents tout capabillities where devices "automatically" connect when in range. But what if I don't want my device to connect? And what happens when I walk onto a crowded train or airplane? The "resurrecting duckling" is an encouraging model for dealing with these situations.