For sure it will be used for evil, if it wasn't researched/made for evil in the first place.
This reminds me of the 80s or early 90s Advanced Dungeons & Dragons game called "Curse of the Azure Bonds" wherein the heroes woke up one day without any memory, and under their sword-arm are 5 living tattoos which can control them whenever the master of the the tattoo has need of them.
Another candidate for the mark of the beast. Probably they'll give it to people so they'll think they're enlightened.
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