Adobe has just released the EchoSign app for iOS, which enables legally binding contracts to be signed with a click. The app is free, but the EchoSign service costs money. It’s free for one user who only signs 5 times per month or less. The next tier of service is $14.95/month and allows one user to sign unlimited times. Not sure if this is of use to most lawyers, but some will undoubtedly be interested.