Which method renders PAN unreadable according to policy?

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Multiple Choice

Which method renders PAN unreadable according to policy?

Explanation:
Rendering PAN unreadable means transforming the data so the actual PAN cannot be recovered from storage. One-way hashing of the entire PAN is a valid method because it produces an irreversible representation; you cannot derive the original PAN from the hash, so the PAN remains unreadable even if the data store is breached. Storing PAN in plain text, printing PAN on receipts, or sending PAN via email all keep the actual PAN readable, which does not meet the requirement to render it unreadable.

Rendering PAN unreadable means transforming the data so the actual PAN cannot be recovered from storage. One-way hashing of the entire PAN is a valid method because it produces an irreversible representation; you cannot derive the original PAN from the hash, so the PAN remains unreadable even if the data store is breached.

Storing PAN in plain text, printing PAN on receipts, or sending PAN via email all keep the actual PAN readable, which does not meet the requirement to render it unreadable.

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