What I don't understand:

1. Some carriers allow CC bookings up to 36 hours before departure and do not require the card to be produced at check-in. CC Companies check and approve a transaction these days almost instantly and, once approved, the merchant is guaranteed payment. Is SQ's technology so archaic that they are unable to process electronic transactions in a secure and expedient way?

2. Further to the above, I have been asked to produce the CC when I was still flying SQ even if the online booking had been made several months in advance. Such a long time after booking, surely the transaction would have been fully processed and SQ would already have the fare in their account. So doesn't it just become an ID issue, for which a Passport should suffice?

3. Yes the policy is there and is clearly noted at the time of booking so like good little sheeple we should simply follow along as instructed? I don't think so.

IMHO, this policy is an anachronism and needs to be changed in the interests of "Enhanced" customer service (I always use that word carefully wrt SQ policies). SQ, as usual, makes matters worse by being totally inscrutible and refusing to explain the reasons for the inconvenience.