Could you look at the wireless MAC, contact the manufacturer, figure out where it was sold, contact the seller, and ask for sales records?
Guess it wouldn't prevent people from buying on craigslist.
Guess it wouldn't prevent people from buying on craigslist.
Even if they weren't, its easy enough to buy random $5 wifi enabled dev boards from Aliexpress or somewhere similar, where detailed records tracing individual boards from manufacturer -> distributor -> reseller -> user are highly unlikely to exist.