DuPont Authentication can be reached at the following address and telephone number:
DuPont Authentication
Barley Mill Plaza - Bldg. 30
4417 Lancaster Pike
Wilmington, DE 19805
Phone: 1-800-345-9999 Option 4, 1
Fax: 1-800-992-3056
To correspond by email, click on the link below:
customerservice.authentication@usa.dupont.com
