Which questions would encourage discussion by being open-ended

A technological device that transmits fraudulent credentials to trick cell phones into connecting to it.

Explanation:

The Stingray is "cell site simulator". It was initially developed for the military and intelligence community. It is invasive cell phone surveillance device. It is a technological device that actually transmits fraudulent credentials to trick cell phones into connecting to it. It does that by mimicking cell phone towers and eventually tricks cell phones in that area to send out their locations and information.