Most cases are the first: does anyone want this. With Customer Development before Product Development one can get the answer before building anything that may b

Most cases are the first: does anyone want this. With Customer Development before Product Development one can get the answer before building anything that may be covered by employment contract. Lean Customer Development by Cindy Alavrez is a book that has details. Edit: some jurisdiction these restrictions don't apply. That is: your off clock works cannot be claimed. Not a Lawyer.