Please explain how procedures for issuance of identity papers and travel documents prevent counterfeiting, forgery or fraudulent use of such documents and what other measures are used to prevent their forgery, etc.
请解释贵国如何用签发身份证和旅行证件的程序来防止假造、伪造或冒用这类证件，以及还采取什么其他措施来防止伪造等？