"It is believed to have been used as early as the 10th century to hex unwanted guests, and the self-described spiritual community of Sólsetrið was quite unwelco

"It is believed to have been used as early as the 10th century to hex unwanted guests, and the self-described spiritual community of Sólsetrið was quite unwelcome in rural Kjalarnes." Since this is HN I'll suggest they just use a hex editor instead.