Hi, I watched your video about nails. I’ve learned in the past that stepping on nails is only a problem barefoot (assuming the nails are in the same spot they fell in); with shoes it’s not a problem. I can’t find the source to this. Have you heard of this at all?
No, have never seen this written in any sefer.
See Kav Hayashar (ch. 17 ד”ה והנה).