Support for beta-users:
support@handster.com

Software Developers:
Please email us your product information to partner@handster.com.

Press/Media:
In you have any questions please contact us at press@handster.com.

Sales/OEM partnership:
For volume sales, please email us at sales@handster.com.

General contact information:
Email: contact@handster.com

Mailing address:

Handster Inc.
P.O. Box 4916
BUFFALO GROVE IL 60089, USA

Phone: +1 847 380 1551
Fax: +1 866 626 9582

Our "Frequently Asked Questions" page:
Handster FAQ page