I would use the same method the Vets use. If the ear thing worked, don't you think the Vet would use it? Sorry to be so blunt, but think about it. I am sure you want the most accurate reading, right? If your kitty kat is really hot, you may want to take the babe to the Vet to check it out, then start the temp thing on your own!

Keep us posted and here's hoping the kitty is fine now.