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A passenger name record (PNR) is a record in the database of a computer reservation system (CRS) that contains the itinerary for a passenger or a group of passengers travelling together. The concept of a PNR was first introduced by airlines that needed to exchange reservation information in case passengers required flights of multiple airlines ...
Today, DCS mostly (98%) manage e-tickets using interfaces from a number of devices, including check-in kiosks, online check-in, mobile boarding cards, and baggage handling. DCS are able to identify, capture and update reservations from an airline's computer reservation system for passengers stored in a so-called passenger name record (PNR). A ...
Once a flight has departed, the reservation system is updated with a list of the checked-in passengers (e.g. passengers who had a reservation but did not check in (no shows) and passengers who checked in, but did not have a reservation (go shows)). Finally, data needed for revenue accounting and reporting is handed over to administrative systems.
The ticket's full designation is "passenger ticket and baggage check". For most of the history of commercial aviation, tickets for air travel were printed on paper. In time, the form of the paper ticket was standardized, with particular information shown in particular places on the ticket coupon.
It would expand the PNR field to include a few extra fields, like a full street address, date of birth, and a home telephone number. It would then cross-reference these fields with government records and private sector databases to ascertain the identity of the person, and then determine a number of details about that person.
Example of a Key Derivation Function chain as used in the Signal Protocol.The output of one KDF function is the input to the next KDF function in the chain. In cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password, or a passphrase using a pseudorandom function (which typically uses a ...
For Electronic tickets (e-tickets) booked online, IRCTC issues an electronic ticket with a reference PNR on a successful booking. [12] Electronic tickets can be used for travel along with a valid photo identification and cancellation can be done online.
A pseudorandom number generator (PRNG), also known as a deterministic random bit generator (DRBG), [1] is an algorithm for generating a sequence of numbers whose properties approximate the properties of sequences of random numbers.