This is a free service. Phone, tablet, and Windows 10 users can download the free Libby app to your devices. All other computer users need to open the North Texas Libraries On The Go login page. To register, select Haslet Library then enter the 14-digit number located on the back of your card that begins with 26052, omitting any spaces. Information to help you get started with the Libby app is available on the Overdrive website.