For a number of years I carried my PINs disguised similarly without any problems.
They were disguised within a phone list for work and fortunately the numbers in that list were 4 digit extension numbers.
Similarly you can 'hide' them in a list of ordinary numbers by using a genuine dialling code and exchange number, then the PIN
e.g. Barry Chalmers 0141 616 nnnn could be Barclaycard (BC) where nnnn is the PIN
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