Official USDA Swine Premises (PIN) Tags from Destron Fearing™. These tags meet all USDA regualtions and will be required for all breeding animals entering the harvest channel after January 1, 2015. Tags require a PIN (Premises Identification Number) issued by your state's animal health office. PIN tags are available with or without customizable management numbers which allow you to use the tag for herd management in addition to compliance with swine industry regulations. For more information about the PIN registration process, please visit the Pork Checkoff® website.