Is the ICO legal? To answer this question we have to remember one thing – Initial Coin Offer is not only most potential lucrative financial activity but also the most dangerous and risk. It is so easy to create not proper structure of an Initial Coin Offering and you can have problems to define the jurisdiction of your ICO. The ICO is something different that a coin with its life and your activity should include dedicated strategy for ICO’s marketing, compliance, budget and strategy.
You don’t have to physical sign document to make it enforceable. Now it is enough that you read it and agreed. To make valid some clauses it is enough to say that ”buying our token you agree our terms”. Many countries have special regulations about digital signature and you should be sure about such detail choosing your location.