A hand-held electronic device with a keyboard, thumbwheel, display and associated software is optimized for use of the device with the thumbs. The associated software has a plurality of features to optimize efficient use of the limited keyboard space and encourage the use of the device by thumb-based...http://www.google.fr/patents/US7158120?utm_source=gb-gplus-shareBrevet US7158120 - Hand-held electronic device
