asked Her Majesty's Government:

Further to the Written Answer by Lord West of Spithead on 3 December (WA 158), whether there is a material difference of substance between the expressions travel document information (TDI), other passenger information (OPI) and passenger name records (PNR); and, if so, what categories of information are encompassed by or included in TDI and OPI respectively. [HL900]

The term travel document information (TDI) refers to specified biographical information (name, date of birth, nationality, gender, travel document type, state of issue number and expiry date) relating to a passenger. This information is contained in the machine readable zone (MRZ) of suitably equipped travel documents.

Other passenger information (OPI) relates to any other data relating to a passenger held by a carrier in its reservations system and may include, for example, the date on which a reservation was made and payment method.

Passenger name records (PNR) are an industry term used by scheduled air carriers to describe the reservation details held by them.