I saw that too, but I just assumed it was for branding your belongings, rather than other people. At the Philmont Scout Ranch in New Mexico, scouts are permitted to brand their belts, boots, etc. with branding irons to show that they've been there.
Woodworkers use a similar technique for marking their creations. Their branding iron is an attachement for a soldering iron or propane torch.
In other words, while it could be used in a negative manner, I'm not so sure that the object is sinister in and of itself.
Ottor
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