Of all the questionable iPhone cases I've seen, the Smart Guard certainly raises more than just a few eyebrows. It's designed to protect both the phone with a durable case, and the user with a can of pepper spray.
The logic behind the case seems sound. People carry phones everywhere these days + people need protection = the Smart Guard. But even with a safety mechanism that ensures it won't accidentally go off in your pocket, I'd still be hesitant about carrying it.
And not just carrying it, but holding it up to my face when making a call as well. If you've had to use the spray before there's bound to be some residue left on the can, and putting that anywhere near your eyes and face is a terrible idea.
Available for the iPhone 3G, 3Gs, iPhone 4, and 4S, the Smart Guard includes a can of the spicy stuff for about $55, while a replacement blaster is about $28. But being able to incapacitate an attacker while spelling i-n-c-a-p-a-c-i-t-a-t-e in Words With Friends? Priceless. [Piexon via Dvice via The Drum]