RFID tags recently have been finding all sorts of interesting uses. An RFID tag inside a pet can be used by animal shelters to figure out who exactly the animal belongs to, leading to a fast, happy reunion. With the recent FDA approval of RFID tagging of humans, businesses are considering using them as an easy way to keep track of employees. However, an independent firm questioned the FDA, and ran some controlled tests of their own. Their results are extremely surprising: test animals with the RFID tags came down with cancer more often than those that did not have the RFID tags. Some RFID manufacturers might acknowledge these results, and try to make a safer RFID tag. However, this may not be possible, as "it is common for inflamed tissue surrounding a foreign object in the body to develop cancerous cells".