At least if it doesn’t work I can have a chuckle about the quality responses .
Seriously though, my phone c/w sim card (same sort of chip) and wallet c/w digi card and bank cards have been through a laundry cycle more time than I care to remember, they smell nice though afterwards. The trick is to let em dry naturally.
Great thread 
In case the card doesn’t work:
[size=117]Page 35 - Rules on Drivers Hours & Tachographs[/size]:
Lost, stolen or malfunctioning driver cardsWhere it is impossible to use a driver card (e.g. where it has been lost, stolen or damaged or is
malfunctioning) a driver may drive without the card for a maximum of 15 calendar days (or longer
if this is necessary for the vehicle to be returned to its premises) provided that he produces two
printouts — one at the start of the journey and another at the end. Both printouts must be marked with:
- the driver’s name or driver card or licence number, so the driver can be identified;
- any manual entries needed to show periods of other work, availability, and rest or break; and
- the driver’s signature.
The driver must report the problem to DVLA and apply for a new card within 7 calendar days.
MADBAZ:
I’m FAIRY certain that if your BOLD and SURF the net about your problem you may take COMFORT that this has happened before, my mate DAZ says just let it dry naturally and the problem will VANISH.
Is that MABDAZ? 
Take it for a SPIN, should be OK afterwards.
If it dont work you have fifteen days that you can run with out a card using printouts.
When you order your new card they will give you a refrence number that if stopped by vosa or the police you can quote so they can check you have reported it.
I have had 3 cards malfunction in the last year they are a pain in the!!!
My credit card went through a wash and dry cycle. Sadly it still worked when it came out.
I’m sure you’ll be COMFORTed to know that the card worked as usual yesterday morning - except the bubbles keep getting in my eyes .
Thanks for your help.