You can find snowshoes and vending machines in Alaska. You can also find snow shoes used as decorations in restaurants that have odd decorations. Also, snow shoes can be found in a museum. Hell, there are a lot of places and reasons for snow shoes...hell, you can even play tennis with 'em.

as was said before, this is fiction. Let it go. Though, snow shoes would not save anyone from a pressure sensitive alarm system, which is not so uncommon as you might think.