Without prejudice to the generality of paragraphs 2.1 and 2.3, before a data user seeks to collect from an individual his identity card number, the data user should consider whether there may be any less privacy-intrusive alternatives to the collection of such number, and should wherever practicable give the individual the option to choose any such alternative in lieu of providing his identity card number. Such alternatives may include but are not limited to the following:

Note: A common example would be the furnishing of the individual's passport number.

Note: A common example would be the furnishing of a deposit for bicycle hire.

or

Note: A common example would be the identification of a visitor to a building by the tenant in the building whom he visits.