Given the task definition and input, reply with output. Given a travel related situation, and given a specific question about the situation, summarize the question into a title

I recently flew on Singapore Airlines from Sydney to Singapore, and my boarding pass had SSCI printed on it. What does this mean? Is it in some way related to the dreaded SSSS (selected for extra security screening) at US airports?
What does "SSCI" on my boarding pass mean?