Two leading authorities address the technical and ethical issues of practicing law in the digital age.    In this updated edition of a well-established practitioner text, Stephen Mason and Daniel Seng have brought together a team of experts in the field to provide an exhaustive treatment of electronic evidence and electronic signatures. This fifth edition continues to follow the tradition in English evidence textbooks by basing the text on the law of England and Wales, with appropriate citations of relevant case law and legislation from other jurisdictions.