I got the following reply from Tacktick when I inquired about a solar GPS/Digital compass

"Thank your for your comment on new product possibilities.

We can only agree that this would be a useful product but currently there are two problems involved.
1. Currently GPS engines are relatively power hungry and are difficult to operate via the Solar charge routine.
2. Most Class associations specifically outlaw use of direct speed input into their electronics and therefore the market is restricted making anything other than an extremely expensive item impossible to design and produce.

All this is great for the future and rest assured that as soon as situations change Tacktick will be in the forefront of developing this type of product.

Regards

Steve Moore
Customer Support
Tacktick Ltd.
Tel.: +44 (0) 1243 379331 (ext30)
Fax.: +44 (0) 1243) 379199
steve.moore@tacktick.co.uk
www.tacktick.com"