system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How does the torture device used on Han Solo in ESB work?
gpt
It wasn't a torture device, it was an ore analyser Vader decided to repurpose.

The analyser used small electrical charges to determine the makeup of mined samples. Since electrical shocks can be painfull, they just strapped him to the analyser and let it do it's thing with the samples substituted for his face.