Sign design for my wifi-free campground

I'm designing a sign for the front gate of my wifi-free campground. This is what I've got so far:

Attention: This is a wireless-free sanctuary. Absolutely no cell phones, wifi devices, Bluetooth, Fitbit, "smart" devices, hotspots, or bionic body parts allowed. Please leave all such devices turned off and in vehicle.

Did I miss anything?

Of course bionic body parts are fine if they're not wireless. Just not sure how to phrase it- I know some implanted blood sugar monitors are wireless, for example.

Laptops and tablets are a couple things you might add.

If you're sensitive to wireless, you may very well also be slightly sensitive to electric and magnetic fields.

Dandelion - where is your property located in CO.  i am in N NM quite near the border.