Kuka, what appears to be a fairly standard industrial robot, has been reprogrammed to inscribe the entire Martin Luther bible onto a endless roll of paper. It uses a calligraphic style translated by its creators RobotLab from an early font called "Schwabacher."
The pertinent portion of law is the Coinage Act of 1965, specifically Section 31 U.S.C. 5103, entitled "Legal tender," which states: "United States coins and currency (including Federal reserve notes and circulating notes of Federal reserve banks and national banks) are legal tender for all debts, public charges, taxes, and dues."
This statute means that all United States money as identified above are a valid and legal offer of payment for debts when tendered to a creditor. There is, however, no Federal statute mandating that a private business, a person or an organization must accept currency or coins as for payment for goods and/or services. Private businesses are free to develop their own policies on whether or not to accept cash unless there is a State law which says otherwise. For example, a bus line may prohibit payment of fares in pennies or dollar bills. In addition, movie theaters, convenience stores and gas stations may refuse to accept large denomination currency (usually notes above $20) as a matter of policy.
It's shocking, really; if that part isn't true, how are we to believe the "in god we trust" part?
The droid's body language skills are due in large part to technology that allows it to observe, recognize and remember human behavior. NICT's robot learns body language by watching -- much like children, who learn nonverbal communication by watching others -- and it can mimic the observed behavior with natural human-like motions. The robot also creates 3D maps of each body it observes, and it commits the map to memory. These maps allow the robot to remember how people and their bodies look, even when viewing them from different angles. In addition, the robot is equipped with delicate force control mechanisms that allow for precise motion and safe physical interaction with humans.