According to Ahldin, the price of each automatic signature machine ranges from $2,000 to $65,438+0,000. The old machine is as big as a table and can't be put into the porch. The new version is equipped with microprocessor and digital control system, which can be placed on the table. This machine has two mechanical arms, which can move the pen tip up and down. The signature "rhythm" is the same as our daily handwriting. If you put a stack of paper for the machine to sign automatically, you can sign about 500 copies per hour; If you use a manual paper feeder, you can sign about 200 copies per hour.
Heidi Smith, an official in charge of communication affairs in the Bush administration, recalled that the automatic signature machine they used at that time was the size of a desk and was stored in the Eisenhower executive office building adjacent to the White House. As for how to distinguish whether the signature comes from handwriting or machine, handwriting expert Chad suggested that the signature to be tested and the signature known to come from machine should be superimposed together. If they are completely coincident, the former mostly comes from machine. But if the president has multiple sets of signature templates, it is even more difficult to distinguish.