How do HuCards get old?

[soop]

I noticed my old Hucards sometimes need a bit of coaxing to get working.  In, out, jiggle around...  whereas the newer ones are fine.
what would have affected them?  The old ones were stored in my GT's carry case, out of extreme heat (but possibly in my parents loft).

[Tatsujin]

Dirt? Oxidation? ect.?

take an eraser, swip few times properly over the contacts, et voila it will work perfectly again to 99+%.

[soop]

OK, will do

[SignOfZeta]

How HuCards Get Old

Fix them with eraser, contact cleaner, etc.