This email came in yesterday:

I received my HillingdonFirst card earlier this week, and since it replaces the Hillingdon Library card, I put it into my wallet in the Library card’s place.While the HF card is in my wallet, Oyster card readers cannot read my Oyster card.  I tried four different gates and two different ticket machines.  Pressing just my Oyster and HF cards against the yellow Oyster reader also prevents the Oyster card from being read – even out of my wallet. The gates just say “Seek Assistance”, while the ticket machine says “Your Oyster Card has not been initialised for Prestige”.

This makes sense, LASSeO (the standard of the card) uses the same system that Oyster does. If you look at the Future Uses you can see that there are plans to use the scheme to replace the Oyster card (much in the same way that Barclaycard Wave has Oyster built in).

Is anyone else having this problem? If so, please email hillingdonfirst@hotmail.co.uk