Section 2 of the Principal Act is amended -
(a) by the substitution of the following subsection for subsection (1):
"(1) A data controller shall, as respects personal data kept by him or her, comply with the following provisions:
(a) the data or, as the case may be, the information constituting the data shall have been obtained, and the data shall be processed, fairly,
(b) the data shall be accurate and complete and, where necessary, kept up to date,
(c) the data -
(i) shall have been obtained only for one or more specified, explicit and legitimate purposes,
(ii) shall not be further processed in a manner incompatible with that purpose or those purposes,
(iii) shall be adequate, relevant and not excessive in relation to the purpose or purposes for which they were collected or are further processed, and
(iv) shall not be kept for longer than is necessary for that purpose or those purposes,
(d) appropriate security measures shall be taken against unauthorised access to, or unauthorised a
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