Definitely. Metal interferes with the NFC’s antenna, but the ferrite backing on these fixes that. I got these only last week so not sure how durable they are, so I’ll report back. I’ve placed them on my LG monitor stand (which is metal to trigger a work scene), my wireless charger stand, fridge, etc.
If you’re looking for something to put outside such as a wooden fence, I recommend the ones below. They feel sturdier and are waterproof, but don’t work on metal.