ID Tech does provide a one year warranty coverage for their mobile series card readers. You can submit an online RMA request by providing the model #, S/N, problem description and customer contact information and return address from below:
ID Tech contact information
Telephone: 1-800-984-1010 / (714) 761-6368
Fax: (714) 761-8880
http://www.idtechproducts.com