Good to know! I only knew about the magnetic paint because a company I worked for a long time ago wanted to put up big mural-like pictures throughout the office space and decided to mount them on magnets and cover the walls in magnetic paint so they would stick. But then some of our conference rooms couldn't get good wifi even though the AP was right next door... We only figured out later (after putting hard-wired APs in every room LOL) that it was because of the magnetic paint.