If you want to active your Green Dot Temporary Card Online visit the Green Dot activation page to activate your temporary card online at www.greendotonline.com/OnlineActivation. Type the 20-digit activation code into the first box, and then type the "Captcha code" into the second box. Click "Continue" to go through the activation steps. You'll need to enter your PIN, Social Security number, full name and mailing address. Once you are finished, your card is registered and activated.
Call Green Dot by telephone to register and activate your temporary MasterCard by phone. The hours of operation are 8 a.m. to 1 p.m. Monday through Friday, and 8 a.m. to 10 p.m. Saturday and Sunday (Eastern Time). The number is 866-785-6963. Say "register a card" when prompted or press "1." You will be transferred to a Green Dot representative. Provide the representative with your activation number, PIN and personal information to register and activate your card.