> Even their public swimming pools (not allowed to use them if you are a visitor, their digital ticketing system requires the local equivalent of a SSN). The official excuse is that it's tax payer subsidized.

There's a FAQ specifically addressing this [1]:

> If you do not have Singpass, you may still approach our pool or gym staff to buy single-entry passes.

[1] https://ask.gov.sg/activesg/questions/clztixkjr00agracq0ys53...