Im happy cami has a microchip. i belive in the future these are what they are going to use instead of tattoos.. but i dont know.. But the problem with the metal id tag is that the words scrape away. On camis they scratch so easy! so at least she has something else to rely on if the collar get scraped away! But its about time to get her new ones anyway! But tm just to be safe i would keep the tags on the all the time and make sure they dont scrape away!