Mum always told me that if I go for a run I should take my eftpos/credit card with me in case of emergency and I guess as a sort of form of ID (this bit doesn't piss me off, it's perfectly logical)
I am yet to find a pair of running/gym pants that have a pocket big enough to fit my card in. They're always fractionally too small and I spent ages trying to fit my card in (eventually it works but it's a struggle).
Stupid running pants.
remember bum-bags?
NB My father said in WW11 in Burma he used to always carry a razor blade behind his hat-band, in case of snake-bite.