I noticed that this was a problem for the ladies who were wearing sandals and no socks. They had to walk barefoot through the security scanner, effectively picking up the concentrated array of foot germs in that area. It made no sense for the customer.
Honestly, these comments about picking up ‘foot germs’ at security - if you are content to touch an x-ray tray or a even a single door handle on your aircraft without gloves, why on earth would you concerned about feet? It’s a complete non issue.
At any airport you are so much more likely to catch a virus or bug from your bare hands than a verruca from the floor yet even right now there is no demand for constant glove wearing.
Everyone’s feet will be fine.