“…Indeed, although experience is still limited to only few institution, contactless MCG is one of the most promising technology for non‐invasive cardiac electro‐anatomical imaging and accurate localization of arrhythmogenic substrates (Brisinda, Venuti, Sorbo, & Fenici, ; Fenici & Brisinda, ; Fenici, Brisinda, Venuti, & Sorbo, ; Kwong, Leithäuser, Park, & Yu, ). Several studies, all carried out in magnetically shielded rooms, have demonstrated the usefulness of MCG to study AF (Jurkko et al, , ; Kim & Ahn, ; Kim, Kim, Lee, & Ahn, ; Koskinen et al, ; Lehto et al, ; Lim et al, ; Mäntynen et al, ; Nakai et al, ; Sato et al, ; Yamada & Yamaguchi, ; Yamada, Tsukada, Miyashita, Kuga, & Yamaguchi, ; Yoshida et al, ).…”