Inability of an individual or a group to perform the given tasks up to the established standards. http://www.businessdictionary.com/definition/deficiency-performance.html.
TSA Requirements. The TSA requires that adult passengers ages 18 and older show valid photo ID at the security checkpoint. Children, however, are not required to present such identification. This does not mean, however, that children will be able to fly without it.
In Taiwan, an ID card is mandatory for all citizens who are over 14 years old. Every citizen has a unique ID number. The ID card has been uniformly numbered since 1965. A valid National Identification number consists of one letter and nine-digits, in the format A########C.